diff --git a/WPrefs.app/MouseSettings.c b/WPrefs.app/MouseSettings.c
index 5291c0d5..b684c5ce 100644
--- a/WPrefs.app/MouseSettings.c
+++ b/WPrefs.app/MouseSettings.c
@@ -95,7 +95,6 @@ static char *wheelActions[2];
 
 #define DELAY(i)		((i)*75+170)
 
-int ModifierFromKey(Display * dpy, char *key);
 
 static void setMouseAccel(WMScreen * scr, float accel, int threshold)
 {
diff --git a/WPrefs.app/WPrefs.h b/WPrefs.app/WPrefs.h
index 6c7b90f6..2987abfc 100644
--- a/WPrefs.app/WPrefs.h
+++ b/WPrefs.app/WPrefs.h
@@ -115,6 +115,10 @@ void SetSpeedForKey(int speed, const char *defaultName);
 void AddDeadChildHandler(pid_t pid, void (*handler)(void*), void *data);
 
 
+/* ---[ xmodifier.c ] ---------------------------------------------------- */
+int ModifierFromKey(Display * dpy, char *key);
+
+
 #define FRAME_TOP	105
 #define FRAME_LEFT	-2
 #define FRAME_WIDTH	524