diff --git a/service/alerting/common/helper.go b/service/alerting/common/helper.go
index 56121f24..825b34a1 100644
--- a/service/alerting/common/helper.go
+++ b/service/alerting/common/helper.go
@@ -97,6 +97,8 @@ func RetrieveChannel(ch *alerting.Channel) (*alerting.Channel, error) {
 		case alerting.ChannelWebhook:
 			if ch.Webhook == nil {
 				ch.Webhook = refCh.Webhook
+			}else {
+				ch.Webhook.URL = refCh.Webhook.URL
 			}
 		}
 	}