diff --git a/src/server/session.js b/src/server/session.js
index 3e4aaef..221729b 100644
--- a/src/server/session.js
+++ b/src/server/session.js
@@ -1,6 +1,8 @@
 import session from 'express-session';
 import {registerHooks} from 'scwp';
 
+import {joinChannel, validateChannel} from '~/common/channel';
+
 import {appChatState, appUserState, appUsernamesState} from './entry';
 import createRedisClient from './redis';
 
@@ -20,11 +22,16 @@ export default (options = {}) => (
 
 registerHooks({
   hydrators: async (req, res) => {
-    if (req.channel && !req.user) {
-      const {name, type} = req.channel;
-      if (name !== 'anonymous' || type !== 'r') {
+    if (req.channel) {
+      if (!validateChannel(joinChannel(req.channel))) {
         res.redirect('/');
-        return new Promise(() => {});
+      }
+      if (!req.user) {
+        const {name, type} = req.channel;
+        if (name !== 'anonymous' || type !== 'r') {
+          res.redirect('/');
+          return new Promise(() => {});
+        }
       }
     }
     return {