diff --git a/src/osd/sdl/window.cpp b/src/osd/sdl/window.cpp
index 38cef1d496c..48c811f4cf1 100644
--- a/src/osd/sdl/window.cpp
+++ b/src/osd/sdl/window.cpp
@@ -298,7 +298,7 @@ void sdl_window_info::toggle_full_screen()
 	machine().ui().menu_reset();
 	// kill off the drawers
 	renderer_reset();
-	set_platform_window(nullptr);
+//	set_platform_window(nullptr);
 	bool is_osx = false;
 #ifdef SDLMAME_MACOSX
 	// FIXME: This is weird behaviour and certainly a bug in SDL