diff --git a/.gitignore b/.gitignore
index 82b0cd2..cddd7b6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.swp
 *.tar.gz
+mailman3/charts/*
diff --git a/mailman3/templates/web.yaml b/mailman3/templates/web.yaml
index 274e89f..703e91e 100644
--- a/mailman3/templates/web.yaml
+++ b/mailman3/templates/web.yaml
@@ -70,7 +70,7 @@ spec:
             - name: SMTP_HOST
               value: {{ .Values.smtp.host }}
             - name: SMTP_PORT
-              value: {{ .Values.smtp.port }}
+              value: "{{ .Values.smtp.port }}"
             - name: SMTP_HOST_USER
               value: {{ .Values.smtp.host_user }}
             - name: SMTP_HOST_PASSWORD