diff --git a/ps2_usb/config_pjrc_usart.h b/ps2_usb/config_pjrc_usart.h
index 23b0c791..83ddbf77 100644
--- a/ps2_usb/config_pjrc_usart.h
+++ b/ps2_usb/config_pjrc_usart.h
@@ -47,13 +47,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 /* PS/2 lines */
-#define PS2_CLOCK_PORT  PORTF
-#define PS2_CLOCK_PIN   PINF
-#define PS2_CLOCK_DDR   DDRF
+#define PS2_CLOCK_PORT  PORTD
+#define PS2_CLOCK_PIN   PIND
+#define PS2_CLOCK_DDR   DDRD
 #define PS2_CLOCK_BIT   5
-#define PS2_DATA_PORT   PORTF
-#define PS2_DATA_PIN    PINF
-#define PS2_DATA_DDR    DDRF
+#define PS2_DATA_PORT   PORTD
+#define PS2_DATA_PIN    PIND
+#define PS2_DATA_DDR    DDRD
 #define PS2_DATA_BIT    2