diff --git a/src/video/x11/SDL_x11window.c b/src/video/x11/SDL_x11window.c
index 4274d8acc6..9c5a8b34e9 100644
--- a/src/video/x11/SDL_x11window.c
+++ b/src/video/x11/SDL_x11window.c
@@ -997,6 +997,10 @@ void X11_SetWindowSize(_THIS, SDL_Window *window)
         }
 
         if (SDL_GetTicks() >= timeout) {
+            /* Timeout occurred and window size didn't change
+             * wwindow manager likely denied the resize. */
+            window->w = orig_w;
+            window->h = orig_h;
             break;
         }