diff --git a/qdb/memqdb_test.go b/qdb/memqdb_test.go
index 3c72d7c5a..03d48323b 100644
--- a/qdb/memqdb_test.go
+++ b/qdb/memqdb_test.go
@@ -176,6 +176,19 @@ func TestDistributions(t *testing.T) {
 	assert.NotContains(oldDs.Relations, relation.Name)
 }
 
+func TestMemQDB_AlterDistributionDetach(t *testing.T) {
+	assert := assert.New(t)
+
+	memqdb, err := qdb.RestoreQDB(MemQDBPath)
+	assert.NoError(err)
+
+	ctx := context.TODO()
+
+	assert.NoError(memqdb.CreateDistribution(ctx, qdb.NewDistribution("ds1", nil)))
+
+	assert.NoError(memqdb.AlterDistributionDetach(ctx, "ds1", "not_exists"))
+}
+
 func TestKeyRanges(t *testing.T) {
 
 	assert := assert.New(t)