diff --git a/common/host.c b/common/host.c
index a671c97d..261ec647 100644
--- a/common/host.c
+++ b/common/host.c
@@ -27,9 +27,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 bool keyboard_nkro = false;
 #endif
 
-static host_driver_t *driver;
 report_keyboard_t *keyboard_report = &(report_keyboard_t){};
+report_mouse_t mouse_report = {};
+
 
+static host_driver_t *driver;
+static uint16_t last_system_report = 0;
+static uint16_t last_consumer_report = 0;
 
 static inline void add_key_byte(uint8_t code);
 static inline void del_key_byte(uint8_t code);
@@ -52,8 +56,48 @@ uint8_t host_keyboard_leds(void)
     if (!driver) return 0;
     return (*driver->keyboard_leds)();
 }
+/* send report */
+void host_keyboard_send(report_keyboard_t *report)
+{
+    if (!driver) return;
+    (*driver->send_keyboard)(report);
+
+    if (debug_keyboard) {
+        print("keys: ");
+        for (int i = 0; i < REPORT_KEYS; i++) {
+            phex(keyboard_report->keys[i]); print(" ");
+        }
+        print(" mods: "); phex(keyboard_report->mods); print("\n");
+    }
+}
+
+void host_mouse_send(report_mouse_t *report)
+{
+    if (!driver) return;
+    (*driver->send_mouse)(report);
+}
+
+void host_system_send(uint16_t report)
+{
+    if (report == last_system_report) return;
+    last_system_report = report;
+
+    if (!driver) return;
+    (*driver->send_system)(report);
+}
+
+void host_consumer_send(uint16_t report)
+{
+    if (report == last_consumer_report) return;
+    last_consumer_report = report;
+
+    if (!driver) return;
+    (*driver->send_consumer)(report);
+}
+
+
 
-/* keyboard report operations */
+/* keyboard report utils */
 void host_add_key(uint8_t key)
 {
 #ifdef NKRO_ENABLE
@@ -113,6 +157,11 @@ uint8_t host_has_anykey(void)
     return cnt;
 }
 
+uint8_t host_has_anymod(void)
+{
+    return bitpop(keyboard_report->mods);
+}
+
 uint8_t host_get_first_key(void)
 {
 #ifdef NKRO_ENABLE
@@ -129,52 +178,24 @@ uint8_t host_get_first_key(void)
 void host_send_keyboard_report(void)
 {
     if (!driver) return;
-    (*driver->send_keyboard)(keyboard_report);
-
-    if (debug_keyboard) {
-        print("keys: ");
-        for (int i = 0; i < REPORT_KEYS; i++) {
-            phex(keyboard_report->keys[i]); print(" ");
-        }
-        print(" mods: "); phex(keyboard_report->mods); print("\n");
-    }
+    host_keyboard_send(keyboard_report);
 }
 
-
-/* send report */
-void host_keyboard_send(report_keyboard_t *report)
+uint8_t host_mouse_in_use(void)
 {
-    if (!driver) return;
-    (*driver->send_keyboard)(report);
+    return (mouse_report.buttons | mouse_report.x | mouse_report.y | mouse_report.v | mouse_report.h);
 }
 
-void host_mouse_send(report_mouse_t *report)
+uint16_t host_last_sysytem_report(void)
 {
-    if (!driver) return;
-    (*driver->send_mouse)(report);
+    return last_system_report;
 }
 
-void host_system_send(uint16_t data)
+uint16_t host_last_consumer_report(void)
 {
-    static uint16_t last_data = 0;
-    if (data == last_data) return;
-    last_data = data;
-
-    if (!driver) return;
-    (*driver->send_system)(data);
+    return last_consumer_report;
 }
 
-void host_consumer_send(uint16_t data)
-{
-    static uint16_t last_data = 0;
-    if (data == last_data) return;
-    last_data = data;
-
-    if (!driver) return;
-    (*driver->send_consumer)(data);
-}
-
-
 static inline void add_key_byte(uint8_t code)
 {
     int8_t i = 0;
diff --git a/common/host.h b/common/host.h
index a0a661af..207b6831 100644
--- a/common/host.h
+++ b/common/host.h
@@ -31,38 +31,40 @@ extern "C" {
 extern bool keyboard_nkro;
 #endif
 
+/* report */
 extern report_keyboard_t *keyboard_report;
-extern report_keyboard_t *keyboard_report_prev;
+extern report_mouse_t mouse_report;
 
 
 /* host driver */
 void host_set_driver(host_driver_t *driver);
 host_driver_t *host_get_driver(void);
 
+/* host driver interface */
 uint8_t host_keyboard_leds(void);
+void host_keyboard_send(report_keyboard_t *report);
+void host_mouse_send(report_mouse_t *report);
+void host_system_send(uint16_t data);
+void host_consumer_send(uint16_t data);
 
-
-/* keyboard report operations */
-/* key */
+/* keyboard report utils */
 void host_add_key(uint8_t key);
 void host_del_key(uint8_t key);
 void host_clear_keys(void);
-/* modifier */
 void host_add_mod_bit(uint8_t mod);
 void host_del_mod_bit(uint8_t mod);
 void host_set_mods(uint8_t mods);
 void host_clear_mods(void);
-/* query */
 uint8_t host_has_anykey(void);
+uint8_t host_has_anymod(void);
 uint8_t host_get_first_key(void);
-/* send report */
 void host_send_keyboard_report(void);
 
+/* mouse report utils */
+uint8_t host_mouse_in_use(void);
 
-/* send report: mouse, system contorl and consumer page */ 
-void host_mouse_send(report_mouse_t *report);
-void host_system_send(uint16_t data);
-void host_consumer_send(uint16_t data);
+uint16_t host_last_sysytem_report(void);
+uint16_t host_last_consumer_report(void);
 
 #ifdef __cplusplus
 }
diff --git a/common/keyboard.c b/common/keyboard.c
index 43abf423..7a17a9e3 100644
--- a/common/keyboard.c
+++ b/common/keyboard.c
@@ -110,6 +110,12 @@ static void clear_keyboard_but_mods(void)
 #endif
 }
 
+static bool anykey_sent_to_host(void)
+{
+    return (host_has_anykey() || host_mouse_in_use() ||
+            host_last_sysytem_report() || host_last_consumer_report());
+}
+
 static void layer_switch_on(uint8_t code)
 {
     if (!IS_FN(code)) return;
@@ -123,9 +129,9 @@ static void layer_switch_on(uint8_t code)
     }
 }
 
-static void layer_switch_off(uint8_t code)
+static bool layer_switch_off(uint8_t code)
 {
-    if (!IS_FN(code)) return;
+    if (!IS_FN(code)) return false;
     fn_state_bits &= ~FN_BIT(code);
     if (current_layer != keymap_fn_layer(biton(fn_state_bits))) {
         clear_keyboard_but_mods();
@@ -133,21 +139,7 @@ static void layer_switch_off(uint8_t code)
         debug("Layer Switch(off): "); debug_hex(current_layer);
         current_layer = keymap_fn_layer(biton(fn_state_bits));
         debug(" -> "); debug_hex(current_layer); debug("\n");
-    }
-}
-
-// whether any key except modifier is down or not
-static inline bool is_anykey_down(void)
-{
-    for (int r = 0; r < MATRIX_ROWS; r++) {
-        matrix_row_t matrix_row = matrix_get_row(r);
-        for (int c = 0; c < MATRIX_COLS; c++) {
-            if (matrix_row && (1<<c)) {
-                if (IS_KEY(keymap_get_keycode(current_layer, r, c))) {
-                    return true;
-                }
-            }
-        }
+        return true;
     }
     return false;
 }
@@ -162,6 +154,10 @@ static void register_code(uint8_t code)
         host_add_mod_bit(MOD_BIT(code));
         host_send_keyboard_report();
     }
+    else if IS_FN(code) {
+        host_add_key(keymap_fn_keycode(FN_INDEX(code)));
+        host_send_keyboard_report();
+    }
     else if IS_MOUSEKEY(code) {
 #ifdef MOUSEKEY_ENABLE
         mousekey_on(code);
@@ -256,6 +252,10 @@ static void unregister_code(uint8_t code)
         host_del_mod_bit(MOD_BIT(code));
         host_send_keyboard_report();
     }
+    else if IS_FN(code) {
+        host_del_key(keymap_fn_keycode(FN_INDEX(code)));
+        host_send_keyboard_report();
+    }
     else if IS_MOUSEKEY(code) {
 #ifdef MOUSEKEY_ENABLE
         mousekey_off(code);
@@ -272,24 +272,31 @@ static void unregister_code(uint8_t code)
 
 /*
  *
- * Event/State|IDLE             DELAYING[f]     WAITING[f,k]        PRESSING
+ * Event/State|IDLE          PRESSING      DELAYING[f]      WAITING[f,k]         
  * -----------+------------------------------------------------------------------
- * Fn  Down   |IDLE(L+)         WAITING(Sk)     WAITING(Sk)         -
- *     Up     |IDLE(L-)         IDLE(L-)        IDLE(L-)            IDLE(L-)
- * Fnk Down   |DELAYING(Sf)     WAITING(Sk)     WAINTING(Sk)        PRESSING(Rf)
- *     Up     |IDLE(L-)         IDLE(Rf,Uf)     IDLE(Rf,Ps,Uf)*3    PRESSING(Uf)
- * Key Down   |PRESSING(Rk)     WAITING(Sk)     WAITING(Sk)         PRESSING(Rk)
- *     Up     |IDLE(Uk)         DELAYING(Uk)    IDLE(L+,Ps,Uk)      IDLE(Uk)*4
- * Delay      |-                IDLE(L+)        IDLE(L+,Ps)         -
+ * Fn  Down   |(L+)          -*1           WAITING(Sk)      IDLE(Rf,Ps)*7        
+ *     Up     |(L-)          IDLE(L-)*8    IDLE(L-)*8       IDLE(L-)*8           
+ * Fnk Down   |DELAYING(Sf)* (Rf)          WAITING(Sk)      IDLE(Rf,Ps,Rf)       
+ *     Up     |(L-)          IDLE(L-/Uf)*8 IDLE(Rf,Uf/L-)*3 IDLE(Rf,Ps,Uf/L-)*3  
+ * Key Down   |PRESSING(Rk)  (Rk)          WAITING(Sk)      IDLE(Rf,Ps,Rk)       
+ *     Up     |(Uk)          IDLE(Uk)*4    (Uk)             IDLE(L+,Ps,Pk)/(Uk)*a
  *            |
- * No key Down|IDLE(Ld)         IDLE(Ld)        IDLE(Ld)            IDLE(Ld)
+ * Delay      |-             -             IDLE(L+)         IDLE(L+,Ps)          
+ * Magic Key  |COMMAND*5
  *
+ * *1: ignore Fn if other key is down.
  * *2: register Fnk if any key is pressing
- * *3: when Fnk == Stored Fnk, if not ignore.
- * *4: when no registered key any more
+ * *3: register/unregister delayed Fnk and move to IDLE if code == delayed Fnk, else *8
+ * *4: if no keys registered to host
+ * *5: unregister all keys
+ * *6: only if no keys down
+ * *7: ignore Fn because Fnk key and stored key are down.
+ * *8: move to IDLE if layer switch(off) occurs, else stay at current state
+ * *9: repeat key if pressing Fnk twice quickly(move to PRESSING)
+ * *a: layer switch and process waiting key and code if code == wainting key, else unregister key
  *
  * States:
- *      IDLE:
+ *      IDLE: No key is down except modifiers
  *      DELAYING: delay layer switch after pressing Fn with alt keycode
  *      WAITING: key is pressed during DELAYING
  *
@@ -297,17 +304,20 @@ static void unregister_code(uint8_t code)
  *      Fn: Fn key without alternative keycode
  *      Fnk: Fn key with alternative keycode
  *      -: ignore
+ *      Delay: layer switch delay term is elapsed
  *
  * Actions:
  *      Rk: register key
  *      Uk: unregister key
- *      Rf: register stored Fn(alt keycode)
- *      Uf: unregister stored Fn(alt keycode)
+ *      Rf: register Fn(alt keycode)
+ *      Uf: unregister Fn(alt keycode)
  *      Rs: register stored key
  *      Us: unregister stored key
- *      Sk: store key
- *      Sf: store Fn
- *      Ps: play stored key(Interpret stored key and transit state)
+ *      Sk: Store key(waiting Key)
+ *      Sf: Store Fn(delayed Fn)
+ *      Ps: Process stored key
+ *      Ps: Process key
+ *      Is: Interpret stored keys in current layer
  *      L+: Switch to new layer(*unregister* all keys but modifiers)
  *      L-: Switch back to last layer(*unregister* all keys but modifiers)
  *      Ld: Switch back to default layer(*unregister* all keys but modifiers)
@@ -344,7 +354,7 @@ static inline void process_key(keyevent_t event)
                     // repeat Fn alt key when press Fn key down, up then down again quickly
                     if (KEYEQ(delayed_fn.event.key, event.key) &&
                             timer_elapsed(delayed_fn.time) < LAYER_DELAY) {
-                        register_code(keymap_fn_keycode(FN_INDEX(code)));
+                        register_code(code);
                         NEXT(PRESSING);
                     } else {
                         delayed_fn = (keyrecord_t) {
@@ -380,16 +390,20 @@ static inline void process_key(keyevent_t event)
                     // ignored when any key is pressed
                     break;
                 case FN_UP:
-                    layer_switch_off(code);
-                    NEXT(IDLE);
+                    if (layer_switch_off(code))
+                        NEXT(IDLE);
                     break;
                 case FNK_DOWN:
-                    register_code(keymap_fn_keycode(FN_INDEX(code)));
+                    register_code(code);
                     break;
                 case FNK_UP:
-                    // can't know whether layer switched or not
-                    layer_switch_off(code);
-                    unregister_code(keymap_fn_keycode(FN_INDEX(code)));
+                    if (layer_switch_off(code)) {
+                        NEXT(IDLE);
+                    } else {
+                        unregister_code(code);
+                        if (!anykey_sent_to_host())
+                            NEXT(IDLE);
+                    }
                     break;
                 case KEY_DOWN:
                 case MOD_DOWN:
@@ -398,8 +412,7 @@ static inline void process_key(keyevent_t event)
                 case KEY_UP:
                 case MOD_UP:
                     unregister_code(code);
-                    // TODO: no key registered? mousekey, mediakey, systemkey
-                    if (!host_has_anykey())
+                    if (!anykey_sent_to_host())
                         NEXT(IDLE);
                     break;
                 default:
@@ -423,8 +436,8 @@ static inline void process_key(keyevent_t event)
                     register_code(code);
                     break;
                 case FN_UP:
-                    layer_switch_off(code);
-                    NEXT(IDLE);
+                    if (layer_switch_off(code))
+                        NEXT(IDLE);
                     break;
                 case FNK_UP:
                     if (code == delayed_fn.code) {
@@ -432,19 +445,16 @@ static inline void process_key(keyevent_t event)
                         // restore the mod status at the time of pressing Fn key
                         tmp_mods = keyboard_report->mods;
                         host_set_mods(delayed_fn.mods);
-                        register_code(keymap_fn_keycode(FN_INDEX(delayed_fn.code)));
-                        unregister_code(keymap_fn_keycode(FN_INDEX(delayed_fn.code)));
+                        register_code(delayed_fn.code);
+                        unregister_code(delayed_fn.code);
                         host_set_mods(tmp_mods);
                         NEXT(IDLE);
                     } else {
-                        layer_switch_off(code);
-                        NEXT(IDLE);
+                        if (layer_switch_off(code))
+                            NEXT(IDLE);
                     }
                     break;
                 case KEY_UP:
-                    unregister_code(code);
-                    NEXT(IDLE);
-                    break;
                 case MOD_UP:
                     unregister_code(code);
                     break;
@@ -459,34 +469,40 @@ static inline void process_key(keyevent_t event)
                 case KEY_DOWN:
                     tmp_mods = keyboard_report->mods;
                     host_set_mods(delayed_fn.mods);
-                    register_code(keymap_fn_keycode(FN_INDEX(delayed_fn.code)));
+                    register_code(delayed_fn.code);
                     host_set_mods(waiting_key.mods);
                     register_code(waiting_key.code);
                     host_set_mods(tmp_mods);
-                    register_code(code);
+                    if (kind == FN_DOWN) {
+                        // ignore Fn
+                    } else if (kind == FNK_DOWN) {
+                        register_code(code);
+                    } else if (kind == KEY_DOWN) {
+                        register_code(code);
+                    }
                     NEXT(IDLE);
                     break;
                 case MOD_DOWN:
                     register_code(code);
                     break;
                 case FN_UP:
-                    layer_switch_off(code);
-                    NEXT(IDLE);
+                    if (layer_switch_off(code))
+                        NEXT(IDLE);
                     break;
                 case FNK_UP:
                     if (code == delayed_fn.code) {
                         // alt down, key down, alt up
                         tmp_mods = keyboard_report->mods;
                         host_set_mods(delayed_fn.mods);
-                        register_code(keymap_fn_keycode(FN_INDEX(delayed_fn.code)));
+                        register_code(delayed_fn.code);
                         host_set_mods(waiting_key.mods);
                         register_code(waiting_key.code);
-                        unregister_code(keymap_fn_keycode(FN_INDEX(delayed_fn.code)));
+                        unregister_code(delayed_fn.code);
                         host_set_mods(tmp_mods);
                         NEXT(IDLE);
                     } else {
-                        layer_switch_off(code);
-                        NEXT(IDLE);
+                        if (layer_switch_off(code))
+                            NEXT(IDLE);
                     }
                     break;
                 case KEY_UP:
diff --git a/common/mousekey.c b/common/mousekey.c
index 4b1fe174..353890a1 100644
--- a/common/mousekey.c
+++ b/common/mousekey.c
@@ -25,7 +25,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "mousekey.h"
 
 
-static report_mouse_t report;
 
 static uint8_t mousekey_repeat =  0;
 
@@ -115,89 +114,89 @@ void mousekey_task(void)
     if (timer_elapsed(last_timer) < (mousekey_repeat ? mk_interval : mk_delay*10))
         return;
 
-    if (report.x == 0 && report.y == 0 && report.v == 0 && report.h == 0)
+    if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
         return;
 
     if (mousekey_repeat != UINT8_MAX)
         mousekey_repeat++;
 
 
-    if (report.x > 0) report.x = move_unit();
-    if (report.x < 0) report.x = move_unit() * -1;
-    if (report.y > 0) report.y = move_unit();
-    if (report.y < 0) report.y = move_unit() * -1;
+    if (mouse_report.x > 0) mouse_report.x = move_unit();
+    if (mouse_report.x < 0) mouse_report.x = move_unit() * -1;
+    if (mouse_report.y > 0) mouse_report.y = move_unit();
+    if (mouse_report.y < 0) mouse_report.y = move_unit() * -1;
 
-    if (report.x && report.y) {
-        report.x *= 0.7;
-        report.y *= 0.7;
+    if (mouse_report.x && mouse_report.y) {
+        mouse_report.x *= 0.7;
+        mouse_report.y *= 0.7;
     }
 
-    if (report.v > 0) report.v = wheel_unit();
-    if (report.v < 0) report.v = wheel_unit() * -1;
-    if (report.h > 0) report.h = wheel_unit();
-    if (report.h < 0) report.h = wheel_unit() * -1;
+    if (mouse_report.v > 0) mouse_report.v = wheel_unit();
+    if (mouse_report.v < 0) mouse_report.v = wheel_unit() * -1;
+    if (mouse_report.h > 0) mouse_report.h = wheel_unit();
+    if (mouse_report.h < 0) mouse_report.h = wheel_unit() * -1;
 
     mousekey_send();
 }
 
 void mousekey_on(uint8_t code)
 {
-    if      (code == KC_MS_UP)       report.y = MOUSEKEY_MOVE_DELTA * -1;
-    else if (code == KC_MS_DOWN)     report.y = MOUSEKEY_MOVE_DELTA;
-    else if (code == KC_MS_LEFT)     report.x = MOUSEKEY_MOVE_DELTA * -1;
-    else if (code == KC_MS_RIGHT)    report.x = MOUSEKEY_MOVE_DELTA;
-    else if (code == KC_MS_WH_UP)    report.v = MOUSEKEY_WHEEL_DELTA;
-    else if (code == KC_MS_WH_DOWN)  report.v = MOUSEKEY_WHEEL_DELTA * -1;
-    else if (code == KC_MS_WH_LEFT)  report.h = MOUSEKEY_WHEEL_DELTA * -1;
-    else if (code == KC_MS_WH_RIGHT) report.h = MOUSEKEY_WHEEL_DELTA;
-    else if (code == KC_MS_BTN1)     report.buttons |= MOUSE_BTN1;
-    else if (code == KC_MS_BTN2)     report.buttons |= MOUSE_BTN2;
-    else if (code == KC_MS_BTN3)     report.buttons |= MOUSE_BTN3;
-    else if (code == KC_MS_BTN4)     report.buttons |= MOUSE_BTN4;
-    else if (code == KC_MS_BTN5)     report.buttons |= MOUSE_BTN5;
+    if      (code == KC_MS_UP)       mouse_report.y = MOUSEKEY_MOVE_DELTA * -1;
+    else if (code == KC_MS_DOWN)     mouse_report.y = MOUSEKEY_MOVE_DELTA;
+    else if (code == KC_MS_LEFT)     mouse_report.x = MOUSEKEY_MOVE_DELTA * -1;
+    else if (code == KC_MS_RIGHT)    mouse_report.x = MOUSEKEY_MOVE_DELTA;
+    else if (code == KC_MS_WH_UP)    mouse_report.v = MOUSEKEY_WHEEL_DELTA;
+    else if (code == KC_MS_WH_DOWN)  mouse_report.v = MOUSEKEY_WHEEL_DELTA * -1;
+    else if (code == KC_MS_WH_LEFT)  mouse_report.h = MOUSEKEY_WHEEL_DELTA * -1;
+    else if (code == KC_MS_WH_RIGHT) mouse_report.h = MOUSEKEY_WHEEL_DELTA;
+    else if (code == KC_MS_BTN1)     mouse_report.buttons |= MOUSE_BTN1;
+    else if (code == KC_MS_BTN2)     mouse_report.buttons |= MOUSE_BTN2;
+    else if (code == KC_MS_BTN3)     mouse_report.buttons |= MOUSE_BTN3;
+    else if (code == KC_MS_BTN4)     mouse_report.buttons |= MOUSE_BTN4;
+    else if (code == KC_MS_BTN5)     mouse_report.buttons |= MOUSE_BTN5;
 }
 
 void mousekey_off(uint8_t code)
 {
-    if      (code == KC_MS_UP       && report.y < 0) report.y = 0;
-    else if (code == KC_MS_DOWN     && report.y > 0) report.y = 0;
-    else if (code == KC_MS_LEFT     && report.x < 0) report.x = 0;
-    else if (code == KC_MS_RIGHT    && report.x > 0) report.x = 0;
-    else if (code == KC_MS_WH_UP    && report.v > 0) report.v = 0;
-    else if (code == KC_MS_WH_DOWN  && report.v < 0) report.v = 0;
-    else if (code == KC_MS_WH_LEFT  && report.h < 0) report.h = 0;
-    else if (code == KC_MS_WH_RIGHT && report.h > 0) report.h = 0;
-    else if (code == KC_MS_BTN1)                     report.buttons &= ~MOUSE_BTN1;
-    else if (code == KC_MS_BTN2)                     report.buttons &= ~MOUSE_BTN2;
-    else if (code == KC_MS_BTN3)                     report.buttons &= ~MOUSE_BTN3;
-    else if (code == KC_MS_BTN4)                     report.buttons &= ~MOUSE_BTN4;
-    else if (code == KC_MS_BTN5)                     report.buttons &= ~MOUSE_BTN5;
-
-    if (report.x == 0 && report.y == 0 && report.v == 0 && report.h == 0)
+    if      (code == KC_MS_UP       && mouse_report.y < 0) mouse_report.y = 0;
+    else if (code == KC_MS_DOWN     && mouse_report.y > 0) mouse_report.y = 0;
+    else if (code == KC_MS_LEFT     && mouse_report.x < 0) mouse_report.x = 0;
+    else if (code == KC_MS_RIGHT    && mouse_report.x > 0) mouse_report.x = 0;
+    else if (code == KC_MS_WH_UP    && mouse_report.v > 0) mouse_report.v = 0;
+    else if (code == KC_MS_WH_DOWN  && mouse_report.v < 0) mouse_report.v = 0;
+    else if (code == KC_MS_WH_LEFT  && mouse_report.h < 0) mouse_report.h = 0;
+    else if (code == KC_MS_WH_RIGHT && mouse_report.h > 0) mouse_report.h = 0;
+    else if (code == KC_MS_BTN1) mouse_report.buttons &= ~MOUSE_BTN1;
+    else if (code == KC_MS_BTN2) mouse_report.buttons &= ~MOUSE_BTN2;
+    else if (code == KC_MS_BTN3) mouse_report.buttons &= ~MOUSE_BTN3;
+    else if (code == KC_MS_BTN4) mouse_report.buttons &= ~MOUSE_BTN4;
+    else if (code == KC_MS_BTN5) mouse_report.buttons &= ~MOUSE_BTN5;
+
+    if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
         mousekey_repeat = 0;
 }
 
 void mousekey_send(void)
 {
     mousekey_debug();
-    host_mouse_send(&report);
+    host_mouse_send(&mouse_report);
     last_timer = timer_read();
 }
 
 void mousekey_clear(void)
 {
-    report = (report_mouse_t){};
+    mouse_report = (report_mouse_t){};
 }
 
 static void mousekey_debug(void)
 {
     if (!debug_mouse) return;
     print("mousekey [btn|x y v h]rep: [");
-    phex(report.buttons); print("|");
-    phex(report.x); print(" ");
-    phex(report.y); print(" ");
-    phex(report.v); print(" ");
-    phex(report.h); print("]");
+    phex(mouse_report.buttons); print("|");
+    phex(mouse_report.x); print(" ");
+    phex(mouse_report.y); print(" ");
+    phex(mouse_report.v); print(" ");
+    phex(mouse_report.h); print("]");
     phex(mousekey_repeat);
     print("\n");
 }