diff --git a/alerta.conf.tmpl b/alerta.conf.tmpl
index 7a80b30..b907e49 100644
--- a/alerta.conf.tmpl
+++ b/alerta.conf.tmpl
@@ -14,13 +14,13 @@ dashboard_url = https://{{ env "DOMAIN" }}
 debug = {{ env "DEBUG" }}
 email_type = text
 endpoint = http://web:8080/api
-key = {{ secret "mailer_api_key" }}
+key = "{{ secret "mailer_api_key" }}"
 mail_from = {{ env "MAIL_FROM" }}
 mail_template = /app/email.tmpl
 mail_to = {{ env "MAIL_TO" }}
 skip_mta = False
 smtp_host = {{ env "SMTP_HOST" }}
 smtp_username = {{ env "MAIL_FROM" }}
-smtp_password = {{ secret "smtp_password" }}
+smtp_password = "{{ secret "smtp_password" }}"
 smtp_port = {{ env "SMTP_PORT" }}
 smtp_starttls = {{ env "SMTP_STARTTLS" }}