diff --git a/dlls/d3drm/tests/d3drm.c b/dlls/d3drm/tests/d3drm.c
index a86c719b54a..91dd0950f82 100644
--- a/dlls/d3drm/tests/d3drm.c
+++ b/dlls/d3drm/tests/d3drm.c
@@ -961,6 +961,7 @@ static void test_Viewport(void)
     IDirectDrawClipper_Release(pClipper);
 
     IDirect3DRM_Release(pD3DRM);
+    DestroyWindow(window);
 }
 
 static void test_Light(void)