diff --git a/kubernetes/dcaegen2-services/common/dcaegen2-services-common/templates/_deployment.tpl b/kubernetes/dcaegen2-services/common/dcaegen2-services-common/templates/_deployment.tpl
index 7c9073a..2d68b38 100644
--- a/kubernetes/dcaegen2-services/common/dcaegen2-services-common/templates/_deployment.tpl
+++ b/kubernetes/dcaegen2-services/common/dcaegen2-services-common/templates/_deployment.tpl
@@ -407,7 +407,7 @@
         {{- end -}}
         {{- if $policy.duration }}
         - name: POLICY_SYNC_DURATION
-          value: {{ $policy.duration }}
+          value: "{{ $policy.duration }}"
         {{- end }}
         resources: {{ include "common.resources" . | nindent 2 }}
         volumeMounts: