diff --git a/phpBB/phpbb/install/helper/iohandler/cli_iohandler.php b/phpBB/phpbb/install/helper/iohandler/cli_iohandler.php
index d990f48925..f711abe431 100644
--- a/phpBB/phpbb/install/helper/iohandler/cli_iohandler.php
+++ b/phpBB/phpbb/install/helper/iohandler/cli_iohandler.php
@@ -232,4 +232,25 @@ class cli_iohandler extends iohandler_base
 			$this->progress_bar = null;
 		}
 	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function request_refresh()
+	{
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function set_active_stage_menu($menu_path)
+	{
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function set_finished_stage_menu($menu_path)
+	{
+	}
 }
diff --git a/phpBB/phpbb/install/helper/iohandler/factory.php b/phpBB/phpbb/install/helper/iohandler/factory.php
index 7081af06a5..52d24e49b2 100644
--- a/phpBB/phpbb/install/helper/iohandler/factory.php
+++ b/phpBB/phpbb/install/helper/iohandler/factory.php
@@ -59,7 +59,7 @@ class factory
 	 */
 	public function get()
 	{
-		if ($this->container->has('installer.helper.iohandler_' . $this->environment))
+		switch ($this->environment)
 		{
 			case 'ajax':
 				return $this->container->get('installer.helper.iohandler_ajax');