diff --git a/tests/Predis/PubSub/ConsumerTest.php b/tests/Predis/PubSub/ConsumerTest.php
index 5ffc5dd0..3bc24766 100644
--- a/tests/Predis/PubSub/ConsumerTest.php
+++ b/tests/Predis/PubSub/ConsumerTest.php
@@ -343,6 +343,7 @@ class ConsumerTest extends PredisTestCase
 
     /**
      * @group connected
+     * @requires extension pcntl
      */
     public function testPubSubAgainstRedisServerBlocking()
     {