diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index bebd566..dabdd8f 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -2374,6 +2374,7 @@
         if (window->surface) {
             window->surface->flags &= ~SDL_DONTFREE;
             SDL_FreeSurface(window->surface);
+            window->surface = NULL;
         }
         window->surface = SDL_CreateWindowFramebuffer(window);
         if (window->surface) {