diff --git a/kubernetes/files/kube-addons/netchecker/netchecker-server.yml b/kubernetes/files/kube-addons/netchecker/netchecker-server.yml
index 8d37948..dc5195c 100644
--- a/kubernetes/files/kube-addons/netchecker/netchecker-server.yml
+++ b/kubernetes/files/kube-addons/netchecker/netchecker-server.yml
@@ -11,8 +11,8 @@
       labels:
         app: netchecker-server
       annotations:
-        prometheus.io/scrape: true
-        prometheus.io/port: {{ master.addons.netchecker.port }}
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "{{ master.addons.netchecker.port }}"
     spec:
       tolerations:
         - key: node-role.kubernetes.io/master