diff --git a/src/main/runtime/structured-agent-session-codex-stopped-send-order.test.ts b/src/main/runtime/structured-agent-session-codex-stopped-send-order.test.ts
index 80432e8399c8..9f43ee59cf95 100644
--- a/src/main/runtime/structured-agent-session-codex-stopped-send-order.test.ts
+++ b/src/main/runtime/structured-agent-session-codex-stopped-send-order.test.ts
@@ -176,6 +176,7 @@ async function startHost(): Promise<void> {
     resolveClaudeAuthPolicy: () => ({ stripAuthEnv: true }),
     resolveCodexCommand: () => 'codex',
     resolveEnvironment: async () => ({ PATH: process.env.PATH }),
+    resolveLaunchArgs: () => [],
     openCodexConnection: openConnection,
     readProcessStartTime: async () => 1_700_000_000_000
   })