diff --git a/gap/congruences/conginv.gi b/gap/congruences/conginv.gi
index 6d6fac65d..87a4507c1 100644
--- a/gap/congruences/conginv.gi
+++ b/gap/congruences/conginv.gi
@@ -584,5 +584,6 @@ function(C)
       od;
     od;
   od;
-  return pairs;
+  return GeneratingPairsOfSemigroupCongruence(CC);
 end);
+