diff --git a/rhodecode/templates/channelstream/plugin_init.mako b/rhodecode/templates/channelstream/plugin_init.mako
--- a/rhodecode/templates/channelstream/plugin_init.mako
+++ b/rhodecode/templates/channelstream/plugin_init.mako
@@ -2,7 +2,7 @@
 
 <script>
     var CHANNELSTREAM_URLS = ${config['url_gen'](request)|n};
-    %if request.registry.rhodecode_plugins['channelstream']['enabled'] and c.rhodecode_user.username != h.DEFAULT_USER:
+    %if request.registry.rhodecode_plugins['channelstream']['enabled'] and getattr(c.rhodecode_user, 'username', '') != h.DEFAULT_USER:
     var CHANNELSTREAM_SETTINGS = {
         'enabled': true,
         'ws_location': '${request.registry.settings.get('channelstream.ws_url')}',