diff --git a/hw/xquartz/quartzKeyboard.c b/hw/xquartz/quartzKeyboard.c
index c54011488..e682f08b6 100644
--- a/hw/xquartz/quartzKeyboard.c
+++ b/hw/xquartz/quartzKeyboard.c
@@ -56,13 +56,7 @@
 
 #include "X11Application.h"
 
-#ifdef NDEBUG
-#undef NDEBUG
 #include <assert.h>
-#define NDEBUG 1
-#else
-#include <assert.h>
-#endif
 #include <pthread.h>
 
 #include "xkbsrv.h"