diff --git a/src/agents/pi-embedded-runner/model.test.ts b/src/agents/pi-embedded-runner/model.test.ts
index 87c2a7d9ee2..72e4d3decf3 100644
--- a/src/agents/pi-embedded-runner/model.test.ts
+++ b/src/agents/pi-embedded-runner/model.test.ts
@@ -837,7 +837,7 @@ describe("resolveModel", () => {
           },
         },
       },
-    } as OpenClawConfig;
+    } as unknown as OpenClawConfig;
 
     const result = resolveModel("openai-codex", "gpt-5.4", "/tmp/agent", cfg);