diff --git a/src/agents/acp-spawn.test.ts b/src/agents/acp-spawn.test.ts
index 758aae8a164..e948d2c37de 100644
--- a/src/agents/acp-spawn.test.ts
+++ b/src/agents/acp-spawn.test.ts
@@ -1148,6 +1148,7 @@ describe("spawnAcpDirect", () => {
       status: "forbidden",
       error: "agentId is not allowed for sessions_spawn (allowed: research)",
     });
+    expect(hoisted.callGatewayMock).not.toHaveBeenCalled();
     expect(hoisted.initializeSessionMock).not.toHaveBeenCalled();
   });
 });