diff --git a/phpBB/phpbb/install/installer.php b/phpBB/phpbb/install/installer.php
index f69b48ce3b..548615cb1d 100644
--- a/phpBB/phpbb/install/installer.php
+++ b/phpBB/phpbb/install/installer.php
@@ -20,15 +20,9 @@ use phpbb\install\exception\resource_limit_reached_exception;
 use phpbb\install\exception\user_interaction_required_exception;
 use phpbb\install\helper\config;
 use phpbb\install\helper\iohandler\iohandler_interface;
-use Symfony\Component\DependencyInjection\ContainerInterface;
 
 class installer
 {
-	/**
-	 * @var ContainerInterface
-	 */
-	protected $container;
-
 	/**
 	 * @var config
 	 */
diff --git a/phpBB/phpbb/install/module_base.php b/phpBB/phpbb/install/module_base.php
index 60eaa79139..a933d4987c 100644
--- a/phpBB/phpbb/install/module_base.php
+++ b/phpBB/phpbb/install/module_base.php
@@ -23,11 +23,6 @@ use phpbb\install\helper\iohandler\iohandler_interface;
  */
 abstract class module_base implements module_interface
 {
-	/**
-	 * @var ContainerInterface
-	 */
-	protected $container;
-
 	/**
 	 * @var config
 	 */