diff --git a/Xi/grabdev.c b/Xi/grabdev.c
index a7e46fe34..925c9a6d2 100644
--- a/Xi/grabdev.c
+++ b/Xi/grabdev.c
@@ -181,7 +181,7 @@ CreateMaskFromList(ClientPtr client, XEventClass * list, int count,
 
     for (i = 0; i < count; i++, list++) {
 	device = *list >> 8;
-	if (device > 255) /* FIXME: we only use 7 bit for devices? */
+	if (device > 255)
 	    return BadClass;
 
 	rc = dixLookupDevice(&tdev, device, client, DixUseAccess);