diff --git a/lib/web/auth/openid/index.js b/lib/web/auth/openid/index.js
index 8d271a7a..9f2db3db 100644
--- a/lib/web/auth/openid/index.js
+++ b/lib/web/auth/openid/index.js
@@ -9,7 +9,7 @@ const logger = require('../../../logger')
 const { urlencodedParser } = require('../../utils')
 const { setReturnToFromReferer } = require('../utils')
 
-let openIDAuth = module.exports = Router()
+const openIDAuth = module.exports = Router()
 
 passport.use(new OpenIDStrategy({
   returnURL: config.serverURL + '/auth/openid/callback',