diff --git a/converter/ps2_usb/Makefile.vusb b/converter/ps2_usb/Makefile.vusb
index d9fa12bc..1f2c209a 100644
--- a/converter/ps2_usb/Makefile.vusb
+++ b/converter/ps2_usb/Makefile.vusb
@@ -36,7 +36,8 @@ OPT_DEFS += -DDEBUG_LEVEL=0
 #MCU = atmega32u4       # Teensy 2.0
 #MCU = at90usb646       # Teensy++ 1.0
 #MCU = at90usb1286      # Teensy++ 2.0
-MCU = atmega168
+#MCU = atmega168
+MCU = atmega328p
 
 
 # Processor frequency.
@@ -44,7 +45,7 @@ MCU = atmega168
 #   so your program will run at the correct speed.  You should also set this
 #   variable to same clock speed.  The _delay_ms() macro uses this, and many
 #   examples use this variable to calculate timings.  Do not add a "UL" here.
-F_CPU = 20000000
+F_CPU = 12000000
 
 
 # Build Options
diff --git a/converter/ps2_usb/config.h b/converter/ps2_usb/config.h
index c0a4fab1..35eb414f 100644
--- a/converter/ps2_usb/config.h
+++ b/converter/ps2_usb/config.h
@@ -61,6 +61,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  * PS/2 Pin interrupt
  */
 #ifdef PS2_USE_INT
+#if defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)
 /* uses INT1 for clock line(ATMega32U4) */
 #define PS2_CLOCK_PORT  PORTD
 #define PS2_CLOCK_PIN   PIND
@@ -81,6 +82,28 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     EIMSK &= ~(1<<INT1);        \
 } while (0)
 #define PS2_INT_VECT    INT1_vect
+
+#elif defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__)
+/* uses PCINT17(PD1) for clock line. this doesn't work with VUSB */
+#define PS2_CLOCK_PORT  PORTD
+#define PS2_CLOCK_PIN   PIND
+#define PS2_CLOCK_DDR   DDRD
+#define PS2_CLOCK_BIT   1
+#define PS2_DATA_PORT   PORTD
+#define PS2_DATA_PIN    PIND
+#define PS2_DATA_DDR    DDRD
+#define PS2_DATA_BIT    0
+#define PS2_INT_INIT()  do {    \
+    PCICR  |= (1<<PCIE2);       \
+} while (0)
+#define PS2_INT_ON()  do {      \
+    PCMSK2 |= (1<<PCINT17);     \
+} while (0)
+#define PS2_INT_OFF() do {      \
+    PCMSK2 &= ~(1<<PCINT17);    \
+} while (0)
+#define PS2_INT_VECT    PCINT2_vect
+#endif
 #endif
 
 /*
diff --git a/tmk_core/protocol/vusb.mk b/tmk_core/protocol/vusb.mk
index 3cba3f71..d541dd0f 100644
--- a/tmk_core/protocol/vusb.mk
+++ b/tmk_core/protocol/vusb.mk
@@ -10,6 +10,7 @@ SRC +=	$(VUSB_DIR)/main.c \
 
 
 ifdef NO_UART
+OPT_DEFS += -DNO_UART
 SRC +=	$(COMMON_DIR)/sendchar_null.c
 else
 SRC +=	$(COMMON_DIR)/sendchar_uart.c \
diff --git a/tmk_core/protocol/vusb/main.c b/tmk_core/protocol/vusb/main.c
index 8e4a266e..0d809536 100644
--- a/tmk_core/protocol/vusb/main.c
+++ b/tmk_core/protocol/vusb/main.c
@@ -49,7 +49,7 @@ int main(void)
 #endif
 
     CLKPR = 0x80, CLKPR = 0;
-#ifndef PS2_USE_USART
+#ifndef NO_UART
     uart_init(UART_BAUD_RATE);
 #endif