diff --git a/src/osd/windows/window.cpp b/src/osd/windows/window.cpp
index 3f3e84b004c..b8344acf9b0 100644
--- a/src/osd/windows/window.cpp
+++ b/src/osd/windows/window.cpp
@@ -358,7 +358,7 @@ win_window_info::win_window_info(
 		m_isminimized(0),
 		m_ismaximized(0),
 		m_monitor(monitor),
-		//m_fullscreen(0),
+		m_fullscreen(!video_config.windowed),
 		m_fullscreen_safe(0),
 		m_aspect(0),
 		m_target(nullptr),
@@ -1977,7 +1977,7 @@ void win_window_info::set_fullscreen(int fullscreen)
 	// if we're in the right state, punt
 	if (this->fullscreen() == fullscreen)
 		return;
-	video_config.windowed = !fullscreen;
+	m_fullscreen = fullscreen;
 
 	// kill off the drawers
 	m_renderer.reset();
diff --git a/src/osd/windows/window.h b/src/osd/windows/window.h
index 47eae45d034..e394723ea82 100644
--- a/src/osd/windows/window.h
+++ b/src/osd/windows/window.h
@@ -53,7 +53,7 @@ public:
 	running_machine &machine() const override { return m_machine; }
 
 	virtual render_target *target() override { return m_target; }
-	int fullscreen() const override { return !video_config.windowed; }
+	int fullscreen() const override { return m_fullscreen; }
 
 	void update();
 
@@ -111,7 +111,7 @@ public:
 
 	// monitor info
 	osd_monitor_info *  m_monitor;
-	//int                 m_fullscreen;
+	int                 m_fullscreen;
 	int                 m_fullscreen_safe;
 	float               m_aspect;