diff --git a/obs/obs-app.cpp b/obs/obs-app.cpp
index 00e3555e4..24a227013 100644
--- a/obs/obs-app.cpp
+++ b/obs/obs-app.cpp
@@ -222,6 +222,10 @@ bool OBSApp::OnInit()
 
 	if (!obs_reset_video(&ovi))
 		return false;
+
+	//required to make opengl display stuff on osx(?)
+	mainWindow->SendSizeEvent();
+
 	return true;
 }