diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index 21def3c80b..d363855446 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -4052,12 +4052,16 @@ bool SDL_SetWindowMouseRect(SDL_Window *window, const SDL_Rect *rect)
 {
     CHECK_WINDOW_MAGIC(window, false);
 
-    if (rect) {
-        SDL_memcpy(&window->mouse_rect, rect, sizeof(*rect));
-    } else {
-        SDL_zero(window->mouse_rect);
+    SDL_Rect zero = { 0, 0, 0, 0 };
+    if (!rect) {
+        rect = &zero;
     }
 
+    if (SDL_memcmp(&window->mouse_rect, rect, sizeof(*rect)) == 0) {
+        return true;
+    }
+    SDL_memcpy(&window->mouse_rect, rect, sizeof(*rect));
+
     if (_this->SetWindowMouseRect) {
         return _this->SetWindowMouseRect(_this, window);
     }