diff --git a/phpBB/config/migrator.yml b/phpBB/config/migrator.yml
index fc534227f5..42445ef9bf 100644
--- a/phpBB/config/migrator.yml
+++ b/phpBB/config/migrator.yml
@@ -5,12 +5,13 @@ services:
             - @config
             - @dbal.conn
             - @dbal.tools
-            - @ext.manager
             - %tables.migrations%
             - %core.root_path%
             - %core.php_ext%
             - %core.table_prefix%
             - @migrator.tool_collection
+        calls:
+            - [set_extension_manager, [@ext.manager]]
 
     migrator.tool_collection:
         class: phpbb_di_service_collection
diff --git a/phpBB/includes/db/migrator.php b/phpBB/includes/db/migrator.php
index 855e640554..de9c06948c 100644
--- a/phpBB/includes/db/migrator.php
+++ b/phpBB/includes/db/migrator.php
@@ -72,12 +72,11 @@ class phpbb_db_migrator
 	/**
 	* Constructor of the database migrator
 	*/
-	public function __construct(phpbb_config $config, phpbb_db_driver $db, phpbb_db_tools $db_tools, phpbb_extension_manager $extension_manager, $migrations_table, $phpbb_root_path, $php_ext, $table_prefix, $tools)
+	public function __construct(phpbb_config $config, phpbb_db_driver $db, phpbb_db_tools $db_tools, $migrations_table, $phpbb_root_path, $php_ext, $table_prefix, $tools)
 	{
 		$this->config = $config;
 		$this->db = $db;
 		$this->db_tools = $db_tools;
-		$this->extension_manager = $extension_manager;
 
 		$this->migrations_table = $migrations_table;
 
@@ -94,6 +93,16 @@ class phpbb_db_migrator
 		$this->load_migration_state();
 	}
 
+	/**
+	* Set Extension Manager (required)
+	*
+	* Not in constructor to prevent circular reference error
+	*/
+	public function set_extension_manager(phpbb_extension_manager $extension_manager)
+	{
+		$this->extension_manager = $extension_manager;
+	}
+
 	/**
 	* Loads all migrations and their application state from the database.
 	*
diff --git a/phpBB/includes/extension/finder.php b/phpBB/includes/extension/finder.php
index 15e6db1bbe..f71e32bc8d 100644
--- a/phpBB/includes/extension/finder.php
+++ b/phpBB/includes/extension/finder.php
@@ -475,7 +475,6 @@ class phpbb_extension_finder
 							'ext_name'		=> $ext_name,
 							'path'			=> str_replace(array(DIRECTORY_SEPARATOR, $this->phpbb_root_path), array('/', ''), $file_info->getPath()) . '/',
 							'filename'		=> $filename,
-							'file_info'		=> $file_info,
 						);
 					}
 				}