diff --git a/charts/kubezero-metrics/values.yaml b/charts/kubezero-metrics/values.yaml
index 05fe82c3..8250a463 100644
--- a/charts/kubezero-metrics/values.yaml
+++ b/charts/kubezero-metrics/values.yaml
@@ -112,7 +112,7 @@ prometheus-operator:
 # Metrics adapter
 prometheus-adapter:
   prometheus:
-    url: metrics-prometheus-operato-prometheus
+    url: http://metrics-prometheus-operato-prometheus
   tolerations:
   - key: node-role.kubernetes.io/master
     effect: NoSchedule