diff --git a/incubator/prometheus/templates/svc.yaml b/incubator/prometheus/templates/svc.yaml
index ca0eeef0cc..15cb92204a 100644
--- a/incubator/prometheus/templates/svc.yaml
+++ b/incubator/prometheus/templates/svc.yaml
@@ -8,7 +8,7 @@ metadata:
     chart: "{{.Chart.Name}}-{{.Chart.Version}}"
 spec:
   ports:
-  - port: {{default 80 .Values.httpPort | quote}}
+  - port: {{default 80 .Values.httpPort }}
     targetPort: 9090
     protocol: TCP
     name: http