diff --git a/reactos/dll/win32/user32/windows/nonclient.c b/reactos/dll/win32/user32/windows/nonclient.c
index 5d2b935f58f..5460748d830 100644
--- a/reactos/dll/win32/user32/windows/nonclient.c
+++ b/reactos/dll/win32/user32/windows/nonclient.c
@@ -489,6 +489,7 @@ DefWndNCPaint(HWND hWnd, HRGN hRgn, BOOL Active)
    }
 
    ReleaseDC(hWnd, hDC);
+   DeleteObject(hRgn); // We use DCX_KEEPCLIPRGN
 
    return 0;
 }