diff --git a/testsuite/gtk/filterlistmodel-exhaustive.c b/testsuite/gtk/filterlistmodel-exhaustive.c
index 01ce99eab5..19bec198a3 100644
--- a/testsuite/gtk/filterlistmodel-exhaustive.c
+++ b/testsuite/gtk/filterlistmodel-exhaustive.c
@@ -424,6 +424,7 @@ test_model_changes (gconstpointer model_id)
                                position,
                                remove ? 1 : 0,
                                (gpointer *) &source, 1);
+          g_object_unref (model1);
           g_object_unref (source);
         }
       else if (remove)