diff --git a/include/video.h b/include/video.h
index 25199495..5fd7a8cb 100644
--- a/include/video.h
+++ b/include/video.h
@@ -18,7 +18,8 @@
 
 #ifndef __VIDEO_H
 #define __VIDEO_H
-
+#include <SDL/SDL.h>
+#include <SDL/SDL_thread.h>
 typedef void (GFX_DrawHandler)(Bit8u * vidstart);
 /* Used to reply to the renderer what size to set */
 typedef void (GFX_ResizeHandler)(Bitu * width,Bitu * height);
@@ -34,8 +35,27 @@ struct GFX_Info {
 	Bitu width,height,bpp,pitch;
 };
 
+
 extern GFX_Info gfx_info;
 
+struct SDL_Block {
+	bool active;							//If this isn't set don't draw
+	Bitu width;
+	Bitu height;
+	Bitu bpp;
+	GFX_DrawHandler * draw;
+	GFX_ResizeHandler * resize;
+	bool mouse_grabbed;
+	bool full_screen;
+	SDL_Thread * thread;
+	SDL_mutex * mutex;
+	SDL_Surface * surface;
+	SDL_Joystick * joy;
+	SDL_Color pal[256];
+};
+
+extern SDL_Block sdl;
+
 void GFX_Events(void);
 void GFX_SetPalette(Bitu start,Bitu count,GFX_PalEntry * entries);
 void GFX_SetDrawHandler(GFX_DrawHandler * handler);
diff --git a/src/gui/sdlmain.cpp b/src/gui/sdlmain.cpp
index 63810e91..3bc5868e 100644
--- a/src/gui/sdlmain.cpp
+++ b/src/gui/sdlmain.cpp
@@ -32,23 +32,7 @@
 //#define DISABLE_JOYSTICK
 
 
-struct SDL_Block {
-	bool active;							//If this isn't set don't draw
-	Bitu width;
-	Bitu height;
-	Bitu bpp;
-	GFX_DrawHandler * draw;
-	GFX_ResizeHandler * resize;
-	bool mouse_grabbed;
-	bool full_screen;
-	SDL_Thread * thread;
-	SDL_mutex * mutex;
-	SDL_Surface * surface;
-	SDL_Joystick * joy;
-	SDL_Color pal[256];
-};
-
-static SDL_Block sdl;
+SDL_Block sdl;
 
 GFX_Info gfx_info;
 
@@ -120,6 +104,10 @@ static void SwitchFullScreen(void) {
 	ResetScreen();
 	GFX_Start();
 }
+//only prototype existed
+void GFX_SwitchFullScreen(void) {
+    SwitchFullScreen();
+}
 
 static void GFX_Redraw() {
 #if C_THREADED
diff --git a/src/misc/support.cpp b/src/misc/support.cpp
index 42959512..6e5f7cae 100644
--- a/src/misc/support.cpp
+++ b/src/misc/support.cpp
@@ -216,6 +216,10 @@ void S_Warn(char * format,...) {
 }
 
 void E_Exit(char * format,...) {
+    
+    if (sdl.full_screen) {
+        GFX_SwitchFullScreen();
+    }
 
 	char buf[1024];
 
@@ -225,7 +229,7 @@ void E_Exit(char * format,...) {
 	va_start(msg,format);
 	vsprintf(buf+strlen(buf),format,msg);
 	va_end(msg);
-
+    
 	strcat(buf,"\n");
 	printf(buf);
 	printf("Press ENTER to stop\n");