diff --git a/charts/maas/templates/job-import.yaml b/charts/maas/templates/job-import.yaml
index b0cbf41..0a05558 100644
--- a/charts/maas/templates/job-import.yaml
+++ b/charts/maas/templates/job-import.yaml
@@ -64,7 +64,7 @@ spec:
             - name: MAAS_PROXY_SERVER
               value: {{ .Values.conf.maas.proxy.proxy_server }}
             - name: MAAS_INTERNAL_PROXY_PORT
-              value: {{ .Values.network.port.service_proxy }}
+              value: {{ .Values.network.port.service_proxy | quote }}
             - name: MAAS_HTTP_BOOT
               value: {{ .Values.conf.maas.http_boot | quote }}
             - name: MAAS_NTP_SERVERS