diff --git a/UI/window-basic-main.cpp b/UI/window-basic-main.cpp
index c390508c7..a996283fb 100644
--- a/UI/window-basic-main.cpp
+++ b/UI/window-basic-main.cpp
@@ -1420,7 +1420,7 @@ void OBSBasic::InitOBSCallbacks()
 {
 	ProfileScope("OBSBasic::InitOBSCallbacks");
 
-	signalHandlers.reserve(signalHandlers.size() + 6);
+	signalHandlers.reserve(signalHandlers.size() + 7);
 	signalHandlers.emplace_back(obs_get_signal_handler(), "source_create",
 				    OBSBasic::SourceCreated, this);
 	signalHandlers.emplace_back(obs_get_signal_handler(), "source_remove",