diff --git a/src/video/windows/SDL_windowsshape.c b/src/video/windows/SDL_windowsshape.c
index 2c3f1cc2b6..db4e4a0e71 100644
--- a/src/video/windows/SDL_windowsshape.c
+++ b/src/video/windows/SDL_windowsshape.c
@@ -116,6 +116,7 @@ bool WIN_UpdateWindowShape(SDL_VideoDevice *_this, SDL_Window *window, SDL_Surfa
         }
     }
     if (!SetWindowRgn(data->hwnd, mask, TRUE)) {
+        DeleteObject(mask);
         return WIN_SetError("SetWindowRgn failed");
     }
     return true;