diff --git a/src/video/fbcon/SDL_fbvideo.c b/src/video/fbcon/SDL_fbvideo.c
index 052e7de..037d17f 100644
--- a/src/video/fbcon/SDL_fbvideo.c
+++ b/src/video/fbcon/SDL_fbvideo.c
@@ -1930,7 +1930,7 @@ static void FB_VideoQuit(_THIS)
 			int left = this->screen->pitch*this->screen->h;
 			while ( left-- ) { *rowp++ = 0; }
 #else
-			SDL_memset(this->screen->pixels,0,this->screen->h*this->screen->pitch);
+			SDL_memset(mapped_mem, 0, mapped_memlen);
 #endif
 		}
 		/* This test fails when using the VGA16 shadow memory */