diff --git a/hw/xquartz/darwinEvents.c b/hw/xquartz/darwinEvents.c
index 2dc048278..7f0ff7e88 100644
--- a/hw/xquartz/darwinEvents.c
+++ b/hw/xquartz/darwinEvents.c
@@ -154,6 +154,7 @@ int darwin_modifier_mask_list[] = {
 #else
     NX_CONTROLMASK, NX_SHIFTMASK, NX_COMMANDMASK, NX_ALTERNATEMASK,
 #endif
+    NX_ALPHASHIFTMASK,
     0
 };
 
@@ -173,7 +174,7 @@ static void DarwinUpdateModifiers(
     }
     
     for(f=darwin_modifier_mask_list; *f; f++)
-        if(*f & flags) {
+        if(*f & flags && *f != NX_ALPHASHIFTMASK) {
             key = DarwinModifierNXMaskToNXKey(*f);
             if(key == -1)
                 ErrorF("DarwinUpdateModifiers: Unsupported NXMask: 0x%x\n", *f);