diff --git a/xos-services/progran/templates/_tosca.tpl b/xos-services/progran/templates/_tosca.tpl
index 27825a4..f952daa 100644
--- a/xos-services/progran/templates/_tosca.tpl
+++ b/xos-services/progran/templates/_tosca.tpl
@@ -30,5 +30,5 @@
       properties:
         name: progran
         onos_address: onos-progran-ui
-        onos_port: 8181  
+        onos_port: "8181"
 {{- end -}}