diff --git a/phpBB/phpbb/di/service_collection.php b/phpBB/phpbb/di/service_collection.php
index 032d299553..3ae3f793c0 100644
--- a/phpBB/phpbb/di/service_collection.php
+++ b/phpBB/phpbb/di/service_collection.php
@@ -38,6 +38,14 @@ class service_collection extends \ArrayObject
 		return new service_collection_iterator($this->container, $this);
 	}
 
+	/**
+	* {@inheritdoc}
+	*/
+	public function offsetExists($index)
+	{
+		return parent::offsetExists($index);
+	}
+
 	/**
 	* {@inheritdoc}
 	*/
diff --git a/phpBB/phpbb/di/service_collection_iterator.php b/phpBB/phpbb/di/service_collection_iterator.php
index ace66d1906..93f74adca9 100644
--- a/phpBB/phpbb/di/service_collection_iterator.php
+++ b/phpBB/phpbb/di/service_collection_iterator.php
@@ -48,6 +48,14 @@ class service_collection_iterator extends \ArrayIterator
 		return $task;
 	}
 
+	/**
+	* {@inheritdoc}
+	*/
+	public function offsetExists($index)
+	{
+		parent::offsetExists($index);
+	}
+
 	/**
 	* {@inheritdoc}
 	*/