diff --git a/packages/prometheus/src/service/dataService.ts b/packages/prometheus/src/service/dataService.ts
index 48ac79e73941..adaedbfc02f6 100644
--- a/packages/prometheus/src/service/dataService.ts
+++ b/packages/prometheus/src/service/dataService.ts
@@ -20,6 +20,7 @@ export class DataService {
   bInit = false;
 
   async init() {
+    Client.register.clear();
     this.responseSummary = new Client.Summary({
       name: 'http_request_latency_milliseconds',
       help: 'response time in millis',