diff --git a/phpBB/includes/template/twig/twig.php b/phpBB/includes/template/twig/twig.php
index f5638972a3..92a37d1634 100644
--- a/phpBB/includes/template/twig/twig.php
+++ b/phpBB/includes/template/twig/twig.php
@@ -172,7 +172,7 @@ class phpbb_template_twig implements phpbb_template
 	*/
 	public function set_filenames(array $filename_array)
 	{
-		$this->filenames = array_merge($filename_array, $this->filenames);
+		$this->filenames = array_merge($this->filenames, $filename_array);
 
 		return $this;
 	}
diff --git a/tests/template/template_parser_test.php b/tests/template/template_parser_test.php
new file mode 100644
index 0000000000..aa7a9412d6
--- /dev/null
+++ b/tests/template/template_parser_test.php
@@ -0,0 +1,29 @@
+<?php
+/**
+*
+* @package testing
+* @copyright (c) 2013 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+require_once dirname(__FILE__) . '/../../phpBB/includes/functions.php';
+require_once dirname(__FILE__) . '/template_test_case.php';
+
+class phpbb_template_template_test extends phpbb_template_template_test_case
+{
+	public function test_set_filenames()
+	{
+		$this->template->set_filenames(array(
+			'basic'	=> 'basic.html',
+		));
+
+		$this->assertEquals("passpasspass<!-- DUMMY var -->", str_replace(array("\n", "\r", "\t"), '', $this->template->assign_display('basic')));
+
+		$this->template->set_filenames(array(
+			'basic'	=> 'if.html',
+		));
+
+		$this->assertEquals("03!false", str_replace(array("\n", "\r", "\t"), '', $this->template->assign_display('basic')));
+	}
+}