diff --git a/src/tests/meta-test-utils.c b/src/tests/meta-test-utils.c
index 4901977a2..90d9ec794 100644
--- a/src/tests/meta-test-utils.c
+++ b/src/tests/meta-test-utils.c
@@ -887,6 +887,8 @@ queue_callback (GTask *task)
   g_cond_signal (&cond);
   g_mutex_unlock (&mutex);
 
+  g_task_return_boolean (task, TRUE);
+
   return G_SOURCE_REMOVE;
 }
 #endif