diff --git a/include/timer.h b/include/timer.h
index 95faaa07..58ffdc49 100644
--- a/include/timer.h
+++ b/include/timer.h
@@ -22,6 +22,9 @@
 #include <SDL/SDL.h>
 
 extern Bit32u LastTicks;
+
+#define PIT_TICK_RATE 1193182
+
 #define GetTicks() SDL_GetTicks()
 
 extern bool TimerAgain;
@@ -50,6 +53,5 @@ void TIMER_CheckPIT(void);
 /* This will add ms ticks to support the timer handlers */
 void TIMER_AddTicks(Bit32u ticks);
 
-
 #endif