--- orig/MoinMoin/PageEditor.py
+++ mod/MoinMoin/PageEditor.py
@@ -915,7 +915,7 @@
             # rights. This is a good place to update acl cache - instead
             # of wating for next request.
             acl = self.getACL(self.request)
-            if (not acl.may(self.request, self.request.user.name, "admin") and
+            if (not self.request.user.may.admin(self.page_name) and
                 parseACL(self.request, newtext) != acl and
                 action != "SAVE/REVERT"):
                 msg = _("You can't change ACLs on this page since you have no admin rights on it!")