diff --git a/src/state/CallViewModel/localMember/LocalTransport.test.ts b/src/state/CallViewModel/localMember/LocalTransport.test.ts
index 93477fea..00561e47 100644
--- a/src/state/CallViewModel/localMember/LocalTransport.test.ts
+++ b/src/state/CallViewModel/localMember/LocalTransport.test.ts
@@ -132,8 +132,11 @@ describe("LocalTransport", () => {
       livekit: { livekit_service_url: "https://lk.example.org" },
     });
     const refused = new SFUTokenRefusedError("This voice channel is full.");
-    vi.spyOn(openIDSFU, "getSFUConfigWithOpenID").mockImplementation(() =>
-      Promise.reject(refused),
+    vi.spyOn(openIDSFU, "getSFUConfigWithOpenID").mockImplementation(
+      async () => {
+        await Promise.resolve();
+        throw refused;
+      },
     );
     const errors: Error[] = [];
     const { active$ } = createLocalTransport$({