diff --git a/waiter/lib/travis/web/app.rb b/waiter/lib/travis/web/app.rb
index c00bcfee..1622b4d4 100644
--- a/waiter/lib/travis/web/app.rb
+++ b/waiter/lib/travis/web/app.rb
@@ -189,7 +189,7 @@ class Travis::Web::App
       pusher['key'] = options[:pusher_key] if options[:pusher_key]
       pusher['host'] = options[:pusher_host] if options[:pusher_host]
       pusher['path'] = options[:pusher_path] if options[:pusher_path]
-      pusher['channel_prefix'] = options[:pusher_channel_prefix] if options[:pusher_channel_prefix]
+      pusher['channelPrefix'] = options[:pusher_channel_prefix] if options[:pusher_channel_prefix]
       config['pusher'] = pusher
 
       config['ember-cli-pendo'] = { apiKey: options[:pendo_key] }