diff --git a/docs/macros.md b/docs/macros.md
index 1418d24a..bbf51434 100644
--- a/docs/macros.md
+++ b/docs/macros.md
@@ -41,7 +41,7 @@ A macro can include the following commands:
 
 ## Sending strings
 
-Sometimes you just want a key to type out words or phrases. For the most common situations we've provided `SEND_STRING()`, which will type out your string for you instead of having to build a `MACRO()`. Right now it assumes a US keymap with a QWERTY layout, so if you are using something else it may not behave as you expect.
+Sometimes you just want a key to type out words or phrases. For the most common situations we've provided `SEND_STRING()`, which will type out your string for you instead of having to build a `MACRO()`.
 
 For example:
 
@@ -58,6 +58,12 @@ const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt) {
 };
 ```
 
+By default, it assumes a US keymap with a QWERTY layout; if you want to change that (e.g. if your OS uses software Colemak), include this somewhere in your keymap:
+
+```
+#include <sendstring_colemak.h>
+```
+
 ## Mapping a Macro to a key
 
 Use the `M()` function within your `KEYMAP()` to call a macro. For example, here is the keymap for a 2-key keyboard:
diff --git a/keyboards/planck/keymaps/rai-suta/Makefile b/keyboards/planck/keymaps/rai-suta/Makefile
index 5238d320..38efe374 100644
--- a/keyboards/planck/keymaps/rai-suta/Makefile
+++ b/keyboards/planck/keymaps/rai-suta/Makefile
@@ -20,9 +20,6 @@ RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
 SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
-# Option defines
-OPT_DEFS += -DSENDSTRING_JIS_KEYCODE
-
 ifndef QUANTUM_DIR
 	include ../../../../Makefile
 endif
\ No newline at end of file
diff --git a/keyboards/planck/keymaps/rai-suta/keymap.c b/keyboards/planck/keymaps/rai-suta/keymap.c
index 13fc3677..3206ffd3 100644
--- a/keyboards/planck/keymaps/rai-suta/keymap.c
+++ b/keyboards/planck/keymaps/rai-suta/keymap.c
@@ -3,6 +3,8 @@
 #include "planck.h"
 #include "version.h"
 
+#include "sendstring_jis.h"
+
 // Keycode defines
 #define _______ KC_TRNS
 #define XXXXXXX KC_NO
diff --git a/quantum/keymap_extras/sendstring_colemak.h b/quantum/keymap_extras/sendstring_colemak.h
new file mode 100644
index 00000000..fa9ace92
--- /dev/null
+++ b/quantum/keymap_extras/sendstring_colemak.h
@@ -0,0 +1,41 @@
+/* Copyright 2016 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/* Sendstring definitions for the Colemak layout */
+#ifndef SENDSTRING_COLEMAK
+#define SENDSTRING_COLEMAK
+
+#include "keymap_colemak.h"
+
+const uint8_t ascii_to_keycode_lut[0x80] PROGMEM = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, KC_ESC, 0, 0, 0, 0,
+    KC_SPC, KC_1, KC_QUOT, KC_3, KC_4, KC_5, KC_7, KC_QUOT,
+    KC_9, KC_0, KC_8, KC_EQL, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
+    KC_0, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
+    KC_8, KC_9, CM_SCLN, CM_SCLN, KC_COMM, KC_EQL, KC_DOT, KC_SLSH,
+    KC_2, CM_A, CM_B, CM_C, CM_D, CM_E, CM_F, CM_G,
+    CM_H, CM_I, CM_J, CM_K, CM_L, CM_M, CM_N, CM_O,
+    CM_P, CM_Q, CM_R, CM_S, CM_T, CM_U, CM_V, CM_W,
+    CM_X, CM_Y, CM_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_6, KC_MINS,
+    KC_GRV, CM_A, CM_B, CM_C, CM_D, CM_E, CM_F, CM_G,
+    CM_H, CM_I, CM_J, CM_K, CM_L, CM_M, CM_N, CM_O,
+    CM_P, CM_Q, CM_R, CM_S, CM_T, CM_U, CM_V, CM_W,
+    CM_X, CM_Y, CM_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_GRV, KC_DEL
+};
+
+#endif
diff --git a/quantum/keymap_extras/sendstring_dvorak.h b/quantum/keymap_extras/sendstring_dvorak.h
new file mode 100644
index 00000000..f5c5c818
--- /dev/null
+++ b/quantum/keymap_extras/sendstring_dvorak.h
@@ -0,0 +1,41 @@
+/* Copyright 2016 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/* Sendstring definitions for the Dvorak layout */
+#ifndef SENDSTRING_DVORAK
+#define SENDSTRING_DVORAK
+
+#include "keymap_dvorak.h"
+
+const uint8_t ascii_to_keycode_lut[0x80] PROGMEM = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, KC_ESC, 0, 0, 0, 0,
+    KC_SPC, DV_1, DV_QUOT, DV_3, DV_4, DV_5, DV_7, DV_QUOT,
+    DV_9, DV_0, DV_8, DV_EQL, DV_COMM, DV_MINS, DV_DOT, DV_SLSH,
+    DV_0, DV_1, DV_2, DV_3, DV_4, DV_5, DV_6, DV_7,
+    DV_8, DV_9, DV_SCLN, DV_SCLN, DV_COMM, DV_EQL, DV_DOT, DV_SLSH,
+    DV_2, DV_A, DV_B, DV_C, DV_D, DV_E, DV_F, DV_G,
+    DV_H, DV_I, DV_J, DV_K, DV_L, DV_M, DV_N, DV_O,
+    DV_P, DV_Q, DV_R, DV_S, DV_T, DV_U, DV_V, DV_W,
+    DV_X, DV_Y, DV_Z, DV_LBRC, DV_BSLS, DV_RBRC, DV_6, DV_MINS,
+    DV_GRV, DV_A, DV_B, DV_C, DV_D, DV_E, DV_F, DV_G,
+    DV_H, DV_I, DV_J, DV_K, DV_L, DV_M, DV_N, DV_O,
+    DV_P, DV_Q, DV_R, DV_S, DV_T, DV_U, DV_V, DV_W,
+    DV_X, DV_Y, DV_Z, DV_LBRC, DV_BSLS, DV_RBRC, DV_GRV, KC_DEL
+};
+
+#endif
diff --git a/quantum/keymap_extras/sendstring_jis.h b/quantum/keymap_extras/sendstring_jis.h
new file mode 100644
index 00000000..c5a38c6a
--- /dev/null
+++ b/quantum/keymap_extras/sendstring_jis.h
@@ -0,0 +1,58 @@
+/* Copyright 2016 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/* Sendstring definitions for the JIS keyboard layout */
+#ifndef SENDSTRING_JIS
+#define SENDSTRING_JIS
+
+const bool ascii_to_shift_lut[0x80] PROGMEM = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 1, 1, 1, 1,
+    0, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 0, 0, 0, 0, 1,
+    1, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 1, 1, 1, 1, 0
+};
+
+const uint8_t ascii_to_keycode_lut[0x80] PROGMEM = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, KC_ESC, 0, 0, 0, 0,
+    KC_SPC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
+    KC_8, KC_9, KC_QUOT, KC_SCLN, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
+    KC_0, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
+    KC_8, KC_9, KC_QUOT, KC_SCLN, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
+    KC_LBRC, KC_A, KC_B, KC_C, KC_D, KC_E, KC_F, KC_G,
+    KC_H, KC_I, KC_J, KC_K, KC_L, KC_M, KC_N, KC_O,
+    KC_P, KC_Q, KC_R, KC_S, KC_T, KC_U, KC_V, KC_W,
+    KC_X, KC_Y, KC_Z, KC_RBRC, KC_JYEN, KC_BSLS, KC_EQL, KC_RO,
+    KC_LBRC, KC_A, KC_B, KC_C, KC_D, KC_E, KC_F, KC_G,
+    KC_H, KC_I, KC_J, KC_K, KC_L, KC_M, KC_N, KC_O,
+    KC_P, KC_Q, KC_R, KC_S, KC_T, KC_U, KC_V, KC_W,
+    KC_X, KC_Y, KC_Z, KC_RBRC, KC_JYEN, KC_BSLS, KC_EQL, KC_DEL,
+};
+
+#endif
diff --git a/quantum/quantum.c b/quantum/quantum.c
index b5acc75c..36e586d3 100644
--- a/quantum/quantum.c
+++ b/quantum/quantum.c
@@ -455,28 +455,7 @@ bool process_record_quantum(keyrecord_t *record) {
   return process_action_kb(record);
 }
 
-#if defined SENDSTRING_JIS_KEYCODE
-/* for users with JIS keyboards */
-const bool ascii_to_shift_lut[0x80] PROGMEM = {
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 1, 1, 1, 1,
-    0, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 0, 0, 0, 0, 1,
-    1, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 1, 1, 1, 1, 0
-};
-#else
-/* for standard keycodes */
+__attribute__ ((weak))
 const bool ascii_to_shift_lut[0x80] PROGMEM = {
     0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0,
@@ -495,72 +474,8 @@ const bool ascii_to_shift_lut[0x80] PROGMEM = {
     0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 1, 1, 1, 1, 0
 };
-#endif
 
-#if defined SENDSTRING_JIS_KEYCODE
-/* for users with JIS keyboards */
-const uint8_t ascii_to_keycode_lut[0x80] PROGMEM = {
-    0, 0, 0, 0, 0, 0, 0, 0,
-    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, KC_ESC, 0, 0, 0, 0,
-    KC_SPC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
-    KC_8, KC_9, KC_QUOT, KC_SCLN, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
-    KC_0, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
-    KC_8, KC_9, KC_QUOT, KC_SCLN, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
-    KC_LBRC, KC_A, KC_B, KC_C, KC_D, KC_E, KC_F, KC_G,
-    KC_H, KC_I, KC_J, KC_K, KC_L, KC_M, KC_N, KC_O,
-    KC_P, KC_Q, KC_R, KC_S, KC_T, KC_U, KC_V, KC_W,
-    KC_X, KC_Y, KC_Z, KC_RBRC, KC_JYEN, KC_BSLS, KC_EQL, KC_RO,
-    KC_LBRC, KC_A, KC_B, KC_C, KC_D, KC_E, KC_F, KC_G,
-    KC_H, KC_I, KC_J, KC_K, KC_L, KC_M, KC_N, KC_O,
-    KC_P, KC_Q, KC_R, KC_S, KC_T, KC_U, KC_V, KC_W,
-    KC_X, KC_Y, KC_Z, KC_RBRC, KC_JYEN, KC_BSLS, KC_EQL, KC_DEL,
-};
-#elif defined SENDSTRING_COLEMAK_KEYCODE
-/* for users whose OSes are set to Colemak */
-#include "keymap_colemak.h"
-const uint8_t ascii_to_keycode_lut[0x80] PROGMEM = {
-    0, 0, 0, 0, 0, 0, 0, 0,
-    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, KC_ESC, 0, 0, 0, 0,
-    KC_SPC, KC_1, KC_QUOT, KC_3, KC_4, KC_5, KC_7, KC_QUOT,
-    KC_9, KC_0, KC_8, KC_EQL, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
-    KC_0, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
-    KC_8, KC_9, CM_SCLN, CM_SCLN, KC_COMM, KC_EQL, KC_DOT, KC_SLSH,
-    KC_2, CM_A, CM_B, CM_C, CM_D, CM_E, CM_F, CM_G,
-    CM_H, CM_I, CM_J, CM_K, CM_L, CM_M, CM_N, CM_O,
-    CM_P, CM_Q, CM_R, CM_S, CM_T, CM_U, CM_V, CM_W,
-    CM_X, CM_Y, CM_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_6, KC_MINS,
-    KC_GRV, CM_A, CM_B, CM_C, CM_D, CM_E, CM_F, CM_G,
-    CM_H, CM_I, CM_J, CM_K, CM_L, CM_M, CM_N, CM_O,
-    CM_P, CM_Q, CM_R, CM_S, CM_T, CM_U, CM_V, CM_W,
-    CM_X, CM_Y, CM_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_GRV, KC_DEL
-};
-#elif defined SENDSTRING_DVORAK_KEYCODE
-/* for users whose OSes are set to Dvorak */
-#include "keymap_dvorak.h"
-const uint8_t ascii_to_keycode_lut[0x80] PROGMEM = {
-    0, 0, 0, 0, 0, 0, 0, 0,
-    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, KC_ESC, 0, 0, 0, 0,
-    KC_SPC, DV_1, DV_QUOT, DV_3, DV_4, DV_5, DV_7, DV_QUOT,
-    DV_9, DV_0, DV_8, DV_EQL, DV_COMM, DV_MINS, DV_DOT, DV_SLSH,
-    DV_0, DV_1, DV_2, DV_3, DV_4, DV_5, DV_6, DV_7,
-    DV_8, DV_9, DV_SCLN, DV_SCLN, DV_COMM, DV_EQL, DV_DOT, DV_SLSH,
-    DV_2, DV_A, DV_B, DV_C, DV_D, DV_E, DV_F, DV_G,
-    DV_H, DV_I, DV_J, DV_K, DV_L, DV_M, DV_N, DV_O,
-    DV_P, DV_Q, DV_R, DV_S, DV_T, DV_U, DV_V, DV_W,
-    DV_X, DV_Y, DV_Z, DV_LBRC, DV_BSLS, DV_RBRC, DV_6, DV_MINS,
-    DV_GRV, DV_A, DV_B, DV_C, DV_D, DV_E, DV_F, DV_G,
-    DV_H, DV_I, DV_J, DV_K, DV_L, DV_M, DV_N, DV_O,
-    DV_P, DV_Q, DV_R, DV_S, DV_T, DV_U, DV_V, DV_W,
-    DV_X, DV_Y, DV_Z, DV_LBRC, DV_BSLS, DV_RBRC, DV_GRV, KC_DEL
-};
-#else
-/* For users with default keyboard layout in OS */
+__attribute__ ((weak))
 const uint8_t ascii_to_keycode_lut[0x80] PROGMEM = {
     0, 0, 0, 0, 0, 0, 0, 0,
     KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
@@ -579,7 +494,6 @@ const uint8_t ascii_to_keycode_lut[0x80] PROGMEM = {
     KC_P, KC_Q, KC_R, KC_S, KC_T, KC_U, KC_V, KC_W,
     KC_X, KC_Y, KC_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_GRV, KC_DEL
 };
-#endif
 
 void send_string(const char *str) {
   send_string_with_delay(str, 0);
diff --git a/quantum/quantum.h b/quantum/quantum.h
index 1dafbf3b..e00fe234 100644
--- a/quantum/quantum.h
+++ b/quantum/quantum.h
@@ -95,6 +95,8 @@ extern uint32_t default_layer_state;
 #endif
 
 #define SEND_STRING(str) send_string(PSTR(str))
+extern const bool ascii_to_shift_lut[0x80];
+extern const uint8_t ascii_to_keycode_lut[0x80];
 void send_string(const char *str);
 void send_string_with_delay(const char *str, uint8_t interval);