diff --git a/demo/amqp_consumer.php b/demo/amqp_consumer.php
index 36ce6a52a..7881733c3 100644
--- a/demo/amqp_consumer.php
+++ b/demo/amqp_consumer.php
@@ -80,6 +80,6 @@ function shutdown($channel, $connection)
 register_shutdown_function('shutdown', $channel, $connection);
 
 // Loop as long as the channel has callbacks registered
-while ($ch->is_consuming()) {
+while ($channel ->is_consuming()) {
     $channel->wait();
 }