diff --git a/gap/structure.gi b/gap/structure.gi
index 7b6a8b8..08635a1 100644
--- a/gap/structure.gi
+++ b/gap/structure.gi
@@ -216,7 +216,7 @@ InstallMethod(RightDivisionTable,
   [HasMultiplicationTable],
   function (obj)
     local RS, n;
-    RS := RightPerms(fam);
+    RS := RightPerms(obj);
     n := Size(RS);
     return TransposedMat(List(RS, x->ListPerm(Inverse(x), n)));
 end);