diff --git a/test/osx/test.mm b/test/osx/test.mm
index 8b0f1913e..f3ea6bfc9 100644
--- a/test/osx/test.mm
+++ b/test/osx/test.mm
@@ -131,7 +131,7 @@ static NSWindow *CreateTestWindow()
 static void test()
 {
 	try {
-		NSWindow *win = CreateTestWindow();
+		static NSWindow *win = CreateTestWindow();
 		if (!win)
 			throw "Couldn't create main window";