diff --git a/src/main/runtime/rpc/methods/structured-agent-session-adoption-replay.test.ts b/src/main/runtime/rpc/methods/structured-agent-session-adoption-replay.test.ts
index 42fdbc772a0..67fa39f482e 100644
--- a/src/main/runtime/rpc/methods/structured-agent-session-adoption-replay.test.ts
+++ b/src/main/runtime/rpc/methods/structured-agent-session-adoption-replay.test.ts
@@ -133,7 +133,10 @@ describe('committed adopting create RPC replay', () => {
     const selectAccountHome = vi.fn(() => selectedHome)
     const runtime = new OrcaRuntimeService(
       {
-        getSettings: () => ({ agentDefaultEnv: { codex: {} } })
+        getSettings: () => ({
+          experimentalStructuredNativeChat: true,
+          agentDefaultEnv: { codex: {} }
+        })
       } as never,
       undefined,
       { prepareCodexStructuredLaunch: selectAccountHome }