diff --git a/hw/xquartz/xpr/appledristr.h b/hw/xquartz/xpr/appledristr.h
index a3844f090..c569719b7 100644
--- a/hw/xquartz/xpr/appledristr.h
+++ b/hw/xquartz/xpr/appledristr.h
@@ -157,8 +157,11 @@ typedef struct _AppleDRINotify {
 	CARD32	pad1 B32;
 	CARD32	arg B32;
 	CARD32	pad3 B32;
+	CARD32	pad4 B32;
+	CARD32	pad5 B32;
+	CARD32	pad6 B32;
 } xAppleDRINotifyEvent;
-#define sz_xAppleDRINotifyEvent	20
+#define sz_xAppleDRINotifyEvent	32
 
 
 typedef struct {