diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index caa1f79777..dac0b0e829 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -940,7 +940,7 @@ SDL_DisplayID SDL_GetPrimaryDisplay(void)
 {
     if (!_this || _this->num_displays == 0) {
         SDL_UninitializedVideo();
-        return true;
+        return 0;
     }
     return _this->displays[0]->id;
 }