diff --git a/tests/class_loader/class_loader_test.php b/tests/class_loader/class_loader_test.php
index 76af4dde37..bf27c7c217 100644
--- a/tests/class_loader/class_loader_test.php
+++ b/tests/class_loader/class_loader_test.php
@@ -71,8 +71,8 @@ class phpbb_class_loader_test extends PHPUnit_Framework_TestCase
 		$cache = new phpbb_mock_cache($cache_map);
 
 		$prefix = dirname(__FILE__) . '/';
-		$class_loader = new phpbb_class_loader('phpbb_', $prefix . 'includes/', '.php', $cache);
-		$class_loader_ext = new phpbb_class_loader('phpbb_ext_', $prefix . 'includes/', '.php', $cache);
+		$class_loader = new phpbb_class_loader('phpbb_', $prefix . 'includes/', 'php', $cache);
+		$class_loader_ext = new phpbb_class_loader('phpbb_ext_', $prefix . 'includes/', 'php', $cache);
 
 		$prefix .= 'includes/';
 
diff --git a/tests/controller/helper_url_test.php b/tests/controller/helper_url_test.php
index 195f48d8a9..2c22700ca6 100644
--- a/tests/controller/helper_url_test.php
+++ b/tests/controller/helper_url_test.php
@@ -52,7 +52,7 @@ class phpbb_controller_helper_url_test extends phpbb_test_case
 		$this->user = $this->getMock('phpbb_user');
 		$this->template = new phpbb_template($phpbb_root_path, $phpEx, $config, $this->user, $this->style_resource_locator, new phpbb_template_context());
 
-		$helper = new phpbb_controller_helper($this->template, $this->user, '', '.php');
+		$helper = new phpbb_controller_helper($this->template, $this->user, '', 'php');
 		$this->assertEquals($helper->url($route, $params, $is_amp, $session_id), $expected);
 	}
 }
diff --git a/tests/dbal/migrator_test.php b/tests/dbal/migrator_test.php
index ae4099e6f8..6390d6a715 100644
--- a/tests/dbal/migrator_test.php
+++ b/tests/dbal/migrator_test.php
@@ -63,7 +63,7 @@ class phpbb_dbal_migrator_test extends phpbb_database_test_case
 			new phpbb_filesystem(),
 			'phpbb_ext',
 			dirname(__FILE__) . '/../../phpBB/',
-			'.php',
+			'php',
 			null
 		);
 	}
diff --git a/tests/extension/finder_test.php b/tests/extension/finder_test.php
index 4c99ba6343..dc3e26be02 100644
--- a/tests/extension/finder_test.php
+++ b/tests/extension/finder_test.php
@@ -164,7 +164,7 @@ class phpbb_extension_finder_test extends phpbb_test_case
 	public function test_get_classes_create_cache()
 	{
 		$cache = new phpbb_mock_cache;
-		$finder = new phpbb_extension_finder($this->extension_manager, new phpbb_filesystem(), dirname(__FILE__) . '/', $cache, '.php', '_custom_cache_name');
+		$finder = new phpbb_extension_finder($this->extension_manager, new phpbb_filesystem(), dirname(__FILE__) . '/', $cache, 'php', '_custom_cache_name');
 		$files = $finder->suffix('_class.php')->get_files();
 
 		$expected_files = array(
diff --git a/tests/extension/metadata_manager_test.php b/tests/extension/metadata_manager_test.php
index df7817b479..05d1cbccc3 100644
--- a/tests/extension/metadata_manager_test.php
+++ b/tests/extension/metadata_manager_test.php
@@ -36,7 +36,7 @@ class metadata_manager_test extends phpbb_database_test_case
 		$this->db = $this->new_dbal();
 		$this->db_tools = new phpbb_db_tools($this->db);
 		$this->phpbb_root_path = dirname(__FILE__) . '/';
-		$this->phpEx = '.php';
+		$this->phpEx = 'php';
 		$this->user = new phpbb_user();
 		$this->table_prefix = 'phpbb_';
 
diff --git a/tests/mock/extension_manager.php b/tests/mock/extension_manager.php
index 954f2bf1c4..10b3595206 100644
--- a/tests/mock/extension_manager.php
+++ b/tests/mock/extension_manager.php
@@ -12,7 +12,7 @@ class phpbb_mock_extension_manager extends phpbb_extension_manager
 	public function __construct($phpbb_root_path, $extensions = array())
 	{
 		$this->phpbb_root_path = $phpbb_root_path;
-		$this->php_ext = '.php';
+		$this->php_ext = 'php';
 		$this->extensions = $extensions;
 		$this->filesystem = new phpbb_filesystem();
 	}