diff --git a/dix/grabs.c b/dix/grabs.c
index fe7967415..3b02352df 100644
--- a/dix/grabs.c
+++ b/dix/grabs.c
@@ -219,7 +219,10 @@ CreateGrab(int client, DeviceIntPtr device, DeviceIntPtr modDevice,
     grab->resource = FakeClientID(client);
     grab->device = device;
     grab->window = window;
-    grab->eventMask = mask->core;       /* same for XI */
+    if (grabtype == CORE || grabtype == XI)
+        grab->eventMask = mask->core;       /* same for XI */
+    else
+        grab->eventMask = 0;
     grab->deviceMask = 0;
     grab->ownerEvents = param->ownerEvents;
     grab->keyboardMode = param->this_device_mode;