diff --git a/hw/darwin/darwinKeyboard.c b/hw/darwin/darwinKeyboard.c
index 2f537ca15..47acb65c5 100644
--- a/hw/darwin/darwinKeyboard.c
+++ b/hw/darwin/darwinKeyboard.c
@@ -61,7 +61,7 @@
 #undef DUMP_DARWIN_KEYMAP
 
 /* Define this to use Alt for Mode_switch. */
-#define ALT_IS_MODE_SWITCH 1
+//#define ALT_IS_MODE_SWITCH 1
 
 #include <stdio.h>
 #include <stdlib.h>