diff --git a/extensions/diagnostics-otel/src/service.test.ts b/extensions/diagnostics-otel/src/service.test.ts
index f4e08a4cda..6607cb1097 100644
--- a/extensions/diagnostics-otel/src/service.test.ts
+++ b/extensions/diagnostics-otel/src/service.test.ts
@@ -141,7 +141,6 @@ function createTraceOnlyContext(endpoint: string): OpenClawPluginServiceContext
     stateDir: "/tmp/openclaw-diagnostics-otel-test",
   };
 }
-
 describe("diagnostics-otel service", () => {
   beforeEach(() => {
     telemetryState.counters.clear();