diff --git a/src/eventthread.cpp b/src/eventthread.cpp
index 9217a4a..00c1b3e 100644
--- a/src/eventthread.cpp
+++ b/src/eventthread.cpp
@@ -111,7 +111,11 @@ void EventThread::process(RGSSThreadData &rtData)
 	UnidirMessage<Vec2i> &windowSizeMsg = rtData.windowSizeMsg;
 
 	initALCFunctions(rtData.alcDev);
+
+	// XXX this function breaks input focus on OSX
+#ifndef __MACOSX__
 	SDL_SetEventFilter(eventFilter, &rtData);
+#endif
 
 	fullscreen = rtData.config.fullscreen;
 	int toggleFSMod = rtData.config.anyAltToggleFS ? KMOD_ALT : KMOD_LALT;