diff --git a/UI/window-basic-main.cpp b/UI/window-basic-main.cpp
index e57dc40d98541cee2a60023f32d265e453fb5936..b7860de195d6934534a459b18650b258f1f961d2 100644
--- a/UI/window-basic-main.cpp
+++ b/UI/window-basic-main.cpp
@@ -2880,7 +2880,7 @@ void OBSBasic::SourceCreated(void *data, calldata_t *params)
 
 	if (obs_scene_from_source(source) != NULL)
 		QMetaObject::invokeMethod(static_cast<OBSBasic*>(data),
-				"AddScene",
+				"AddScene", WaitConnection(),
 				Q_ARG(OBSSource, OBSSource(source)));
 }