diff --git a/src/web/auto-reply.test.ts b/src/web/auto-reply.test.ts
index 8a97a5e9d..be00362e1 100644
--- a/src/web/auto-reply.test.ts
+++ b/src/web/auto-reply.test.ts
@@ -822,7 +822,8 @@ describe("web auto-reply", () => {
       await run;
 
       const heartbeatCall = replyResolver.mock.calls.find(
-        (call) => call[0]?.Body === HEARTBEAT_PROMPT,
+        (call) =>
+          call[0]?.Body === HEARTBEAT_PROMPT && call[0]?.MessageSid === "sid-main",
       );
       expect(heartbeatCall?.[0]?.From).toBe("+1555");
       expect(heartbeatCall?.[0]?.To).toBe("+1555");