diff --git a/extensions/diagnostics-otel/src/service.ts b/extensions/diagnostics-otel/src/service.ts
index d4213b6b3d5..527f1f20b1b 100644
--- a/extensions/diagnostics-otel/src/service.ts
+++ b/extensions/diagnostics-otel/src/service.ts
@@ -2221,8 +2221,6 @@ export function createDiagnosticsOtelService(): OpenClawPluginService {
             case "run.attempt":
               recordRunAttempt(evt);
               return;
-            case "diagnostic.liveness.warning":
-              return;
             case "diagnostic.heartbeat":
               recordHeartbeat(evt);
               return;