diff --git a/src/video/cocoa/event.mm b/src/video/cocoa/event.mm
--- a/src/video/cocoa/event.mm
+++ b/src/video/cocoa/event.mm
@@ -606,7 +606,7 @@ void QZ_GameLoop()
 {
 	uint32 cur_ticks = GetTick();
 	uint32 last_cur_ticks = cur_ticks;
-	uint32 next_tick = cur_ticks + 30;
+	uint32 next_tick = cur_ticks + MILLISECONDS_PER_TICK;
 	uint32 pal_tick = 0;
 
 #ifdef _DEBUG
@@ -655,7 +655,7 @@ void QZ_GameLoop()
 		if (cur_ticks >= next_tick || (_fast_forward && !_pause_mode) || cur_ticks < prev_cur_ticks) {
 			_realtime_tick += cur_ticks - last_cur_ticks;
 			last_cur_ticks = cur_ticks;
-			next_tick = cur_ticks + 30;
+			next_tick = cur_ticks + MILLISECONDS_PER_TICK;
 
 			bool old_ctrl_pressed = _ctrl_pressed;