diff --git a/src/gateway/server.hooks.test.ts b/src/gateway/server.hooks.test.ts
index 5f161cc598c..9672922a92b 100644
--- a/src/gateway/server.hooks.test.ts
+++ b/src/gateway/server.hooks.test.ts
@@ -260,7 +260,9 @@ describe("gateway server hooks", () => {
         messages: [{ id: "msg-1", from: "Ada", subject: "Hello", snippet: "Hi", body: "Body" }],
       });
       expect(response.status).toBe(200);
-      await waitForSystemEvent();
+      await expect
+        .poll(() => cronIsolatedRun.mock.calls.length, { timeout: 2_000, interval: 10 })
+        .toBe(1);
 
       const call = (cronIsolatedRun.mock.calls[0] as unknown[] | undefined)?.[0] as {
         sessionKey?: string;