diff --git a/src/video/offscreen/SDL_offscreenframebuffer.c b/src/video/offscreen/SDL_offscreenframebuffer.c
index c2d99e51e..376058856 100644
--- a/src/video/offscreen/SDL_offscreenframebuffer.c
+++ b/src/video/offscreen/SDL_offscreenframebuffer.c
@@ -66,7 +66,7 @@ int SDL_OFFSCREEN_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_
     if (SDL_getenv("SDL_VIDEO_OFFSCREEN_SAVE_FRAMES")) {
         char file[128];
         SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
-                     SDL_GetWindowID(window), ++frame_number);
+                     (int)SDL_GetWindowID(window), ++frame_number);
         SDL_SaveBMP(surface, file);
     }
     return 0;