diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index dc142221f..bd04b44cd 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -1570,6 +1570,8 @@ SDL_SetWindowPosition(SDL_Window * window, int x, int y)
         int displayIndex;
         SDL_Rect bounds;
 
+        SDL_zero(bounds);
+
         displayIndex = SDL_GetIndexOfDisplay(display);
         SDL_GetDisplayBounds(displayIndex, &bounds);
         if (SDL_WINDOWPOS_ISCENTERED(x)) {