diff --git a/protocol.mk b/protocol.mk
index 7f561e62..de7014e8 100644
--- a/protocol.mk
+++ b/protocol.mk
@@ -23,5 +23,25 @@ ifdef PS2_USE_USART
 endif
 
 
+ifdef SERIAL_MOUSE_MICROSOFT_ENABLE
+    SRC += $(PROTOCOL_DIR)/serial_mouse_microsoft.c
+    OPT_DEFS += -DSERIAL_MOUSE_ENABLE -DSERIAL_MOUSE_MICROSOFT \
+                -DMOUSE_ENABLE
+endif
+
+ifdef SERIAL_MOUSE_MOUSESYSTEMS_ENABLE
+    SRC += $(PROTOCOL_DIR)/serial_mouse_mousesystems.c
+    OPT_DEFS += -DSERIAL_MOUSE_ENABLE -DSERIAL_MOUSE_MOUSESYSTEMS \
+                -DMOUSE_ENABLE
+endif
+
+ifdef SERIAL_MOUSE_USE_SOFT
+    SRC += $(PROTOCOL_DIR)/serial_soft.c
+endif
+
+ifdef SERIAL_MOUSE_USE_UART
+    SRC += $(PROTOCOL_DIR)/serial_uart.c
+endif
+
 # Search Path
 VPATH += $(TOP_DIR)/protocol
diff --git a/protocol/lufa/lufa.c b/protocol/lufa/lufa.c
index 16a602df..58201e5c 100644
--- a/protocol/lufa/lufa.c
+++ b/protocol/lufa/lufa.c
@@ -49,6 +49,10 @@
 #endif
 #include "suspend.h"
 
+#ifdef SERIAL_MOUSE_ENABLE
+#include "serial_mouse.h"
+#endif
+
 #include "descriptor.h"
 #include "lufa.h"
 
@@ -571,6 +575,10 @@ int main(void)
     sleep_led_init();
 #endif
 
+#ifdef SERIAL_MOUSE_ENABLE
+    serial_mouse_init();
+#endif
+
     print("Keyboard start.\n");
     while (1) {
         while (USB_DeviceState == DEVICE_STATE_Suspended) {
@@ -582,6 +590,10 @@ int main(void)
 
         keyboard_task();
 
+#ifdef SERIAL_MOUSE_ENABLE
+        serial_mouse_task();
+#endif
+
 #if !defined(INTERRUPT_CONTROL_ENDPOINT)
         USB_USBTask();
 #endif
diff --git a/protocol/serial_mouse_mousesystems.c b/protocol/serial_mouse_mousesystems.c
index ec708c91..68b2b5b3 100644
--- a/protocol/serial_mouse_mousesystems.c
+++ b/protocol/serial_mouse_mousesystems.c
@@ -27,7 +27,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "print.h"
 #include "debug.h"
 
-#define SERIAL_MOUSE_CENTER_SCROLL
+//#define SERIAL_MOUSE_CENTER_SCROLL
 
 static void print_usb_data(const report_mouse_t *report);