diff --git a/phpBB/common.php b/phpBB/common.php
index 3708b63bf9..f6f109c3de 100644
--- a/phpBB/common.php
+++ b/phpBB/common.php
@@ -85,9 +85,9 @@ require($phpbb_root_path . 'includes/utf/utf_tools.' . $phpEx);
 set_error_handler(defined('PHPBB_MSG_HANDLER') ? PHPBB_MSG_HANDLER : 'msg_handler');
 
 // Setup class loader first
-$phpbb_class_loader = new phpbb_class_loader('phpbb_', "{$phpbb_root_path}includes/", "$phpEx");
+$phpbb_class_loader = new phpbb_class_loader('phpbb_', "{$phpbb_root_path}includes/", $phpEx);
 $phpbb_class_loader->register();
-$phpbb_class_loader_ext = new phpbb_class_loader('phpbb_ext_', "{$phpbb_root_path}ext/", "$phpEx");
+$phpbb_class_loader_ext = new phpbb_class_loader('phpbb_ext_', "{$phpbb_root_path}ext/", $phpEx);
 $phpbb_class_loader_ext->register();
 
 // Set up container
diff --git a/phpBB/download/file.php b/phpBB/download/file.php
index ac37737184..eee2090da0 100644
--- a/phpBB/download/file.php
+++ b/phpBB/download/file.php
@@ -50,9 +50,9 @@ if (isset($_GET['avatar']))
 	require($phpbb_root_path . 'includes/utf/utf_tools.' . $phpEx);
 
 	// Setup class loader first
-	$phpbb_class_loader = new phpbb_class_loader('phpbb_', "{$phpbb_root_path}includes/", "$phpEx");
+	$phpbb_class_loader = new phpbb_class_loader('phpbb_', "{$phpbb_root_path}includes/", $phpEx);
 	$phpbb_class_loader->register();
-	$phpbb_class_loader_ext = new phpbb_class_loader('phpbb_ext_', "{$phpbb_root_path}ext/", "$phpEx");
+	$phpbb_class_loader_ext = new phpbb_class_loader('phpbb_ext_', "{$phpbb_root_path}ext/", $phpEx);
 	$phpbb_class_loader_ext->register();
 
 	// Set up container
diff --git a/phpBB/includes/acp/acp_extensions.php b/phpBB/includes/acp/acp_extensions.php
index 9b5a8da3aa..e4defa0400 100644
--- a/phpBB/includes/acp/acp_extensions.php
+++ b/phpBB/includes/acp/acp_extensions.php
@@ -54,7 +54,7 @@ class acp_extensions
 		// If they've specified an extension, let's load the metadata manager and validate it.
 		if ($ext_name)
 		{
-			$md_manager = new phpbb_extension_metadata_manager($ext_name, $db, $phpbb_extension_manager, $phpbb_root_path, "$phpEx", $template, $config);
+			$md_manager = new phpbb_extension_metadata_manager($ext_name, $db, $phpbb_extension_manager, $phpbb_root_path, $phpEx, $template, $config);
 
 			try
 			{
diff --git a/phpBB/install/database_update.php b/phpBB/install/database_update.php
index c2b31b4ecd..5ea950bfad 100644
--- a/phpBB/install/database_update.php
+++ b/phpBB/install/database_update.php
@@ -95,7 +95,7 @@ require($phpbb_root_path . 'includes/utf/utf_tools.' . $phpEx);
 set_error_handler(defined('PHPBB_MSG_HANDLER') ? PHPBB_MSG_HANDLER : 'msg_handler');
 
 // Setup class loader first
-$phpbb_class_loader = new phpbb_class_loader('phpbb_', "{$phpbb_root_path}includes/", "$phpEx");
+$phpbb_class_loader = new phpbb_class_loader('phpbb_', "{$phpbb_root_path}includes/", $phpEx);
 $phpbb_class_loader->register();
 
 // Set up container (must be done here because extensions table may not exist)
diff --git a/phpBB/install/index.php b/phpBB/install/index.php
index 4009db4794..57bcdaffc1 100644
--- a/phpBB/install/index.php
+++ b/phpBB/install/index.php
@@ -90,9 +90,9 @@ include($phpbb_root_path . 'includes/utf/utf_tools.' . $phpEx);
 require($phpbb_root_path . 'includes/functions_install.' . $phpEx);
 
 // Setup class loader first
-$phpbb_class_loader = new phpbb_class_loader('phpbb_', "{$phpbb_root_path}includes/", "$phpEx");
+$phpbb_class_loader = new phpbb_class_loader('phpbb_', "{$phpbb_root_path}includes/", $phpEx);
 $phpbb_class_loader->register();
-$phpbb_class_loader_ext = new phpbb_class_loader('phpbb_ext_', "{$phpbb_root_path}ext/", "$phpEx");
+$phpbb_class_loader_ext = new phpbb_class_loader('phpbb_ext_', "{$phpbb_root_path}ext/", $phpEx);
 $phpbb_class_loader_ext->register();
 
 // Set up container