diff --git a/rootfs/etc/confd/templates/oauth2-userdb.lua.tmpl b/rootfs/etc/confd/templates/oauth2-userdb.lua.tmpl
index 94bdee4..0587b78 100644
--- a/rootfs/etc/confd/templates/oauth2-userdb.lua.tmpl
+++ b/rootfs/etc/confd/templates/oauth2-userdb.lua.tmpl
@@ -1,11 +1,11 @@
 local rapidjson = require('rapidjson')
 
-local clientId = {{ getenv "CLIENT_ID" }}
-local clientSecret = {{ getenv "CLIENT_SECRET" }}
-local username = {{ getenv "OAUTH_ADMIN_USER" }}
-local password = {{ getenv "OAUTH_ADMIN_PASSWORD" }}
-local tokenUrl = {{ getenv "GRANT_URL" }}
-local userUrl = {{ getenv "USER_URL" }}
+local clientId = "{{ getenv "CLIENT_ID" }}"
+local clientSecret = "{{ getenv "CLIENT_SECRET" }}"
+local username = "{{ getenv "OAUTH_ADMIN_USER" }}"
+local password = "{{ getenv "OAUTH_ADMIN_PASSWORD" }}"
+local tokenUrl = "{{ getenv "GRANT_URL" }}"
+local userUrl = "{{ getenv "USER_URL" }}"
 
 function os.capture(cmd, raw)
   local f = assert(io.popen(cmd, 'r'))