diff --git a/UI/NativeApp.cpp b/UI/NativeApp.cpp
index 1ba3abe397..70230f7e0b 100644
--- a/UI/NativeApp.cpp
+++ b/UI/NativeApp.cpp
@@ -870,6 +870,8 @@ bool CreateGlobalPipelines();
 bool NativeInitGraphics(GraphicsContext *graphicsContext) {
 	INFO_LOG(SYSTEM, "NativeInitGraphics");
 
+	_assert_(screenManager);
+
 	// We set this now so any resize during init is processed later.
 	resized = false;