diff --git a/gap/attributes/attr.gi b/gap/attributes/attr.gi
index 1a8086f28..02a50f1ff 100644
--- a/gap/attributes/attr.gi
+++ b/gap/attributes/attr.gi
@@ -798,7 +798,7 @@ function(S, a)
       Add(inverses, f * s * e);
     od;
   od;
-  return AsSet(inverses);
+  return inverses;
 end);
 
 # TODO implement OneInverseOfSemigroupElement
diff --git a/tst/standard/ideals/ideals.tst b/tst/standard/ideals/ideals.tst
index 1914760b0..b60679144 100644
--- a/tst/standard/ideals/ideals.tst
+++ b/tst/standard/ideals/ideals.tst
@@ -230,7 +230,7 @@ gap> I := SemigroupIdeal(S,
 >  Matrix(IsBooleanMat, [[1, 0, 1], [0, 0, 0], [0, 1, 0]]),
 >  Matrix(IsBooleanMat, [[0, 1, 1], [0, 1, 1], [1, 0, 1]]));;
 gap> x := Matrix(IsBooleanMat, [[1, 0, 1], [0, 1, 0], [1, 0, 1]]);;
-gap> InversesOfSemigroupElement(I, x);
+gap> AsSet(InversesOfSemigroupElement(I, x));
 [ Matrix(IsBooleanMat, [[0, 0, 0], [0, 1, 0], [0, 0, 1]]), 
   Matrix(IsBooleanMat, [[0, 0, 0], [0, 1, 0], [1, 0, 0]]), 
   Matrix(IsBooleanMat, [[0, 0, 0], [0, 1, 0], [1, 0, 1]]),