diff --git a/tests/functional/extension_permission_lang_test.php b/tests/functional/extension_permission_lang_test.php
new file mode 100644
index 0000000000..c3d136de49
--- /dev/null
+++ b/tests/functional/extension_permission_lang_test.php
@@ -0,0 +1,59 @@
+<?php
+/**
+*
+* @package testing
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @group functional
+*/
+class phpbb_functional_extension_permission_lang_test extends phpbb_functional_test_case
+{
+	protected $phpbb_extension_manager;
+
+	public function setUp()
+	{
+		parent::setUp();
+
+		$this->phpbb_extension_manager = $this->get_extension_manager();
+
+		$this->purge_cache();
+
+		$this->login();
+		$this->admin_login();
+		$this->add_lang('acp/permissions');
+	}
+
+	public function test_auto_include_permission_lang_from_extensions()
+	{
+		$this->phpbb_extension_manager->enable('foo/bar');
+
+		// User permissions
+		$crawler = $this->request('GET', 'adm/index.php?i=acp_permissions&icat=16&mode=setting_user_global&sid=' . $this->sid);
+		$this->assert_response_success();
+		$this->assertContains('Can view foo', $this->client->getResponse()->getContent());
+	}
+
+	public function permissions_data()
+	{
+		return array(
+			// description
+			// permission type
+			// permission name
+			// mode
+			// object name
+			// object id
+			array(
+				'user permission',
+				'u_',
+				'acl_u_foo',
+				'setting_user_global',
+				'user_id',
+				2,
+			),
+		);
+	}
+}
diff --git a/tests/functional/fixtures/ext/foo/bar/language/en/permissions_foo.php b/tests/functional/fixtures/ext/foo/bar/language/en/permissions_foo.php
new file mode 100644
index 0000000000..cd4b9a32d1
--- /dev/null
+++ b/tests/functional/fixtures/ext/foo/bar/language/en/permissions_foo.php
@@ -0,0 +1,6 @@
+<?php
+
+// Admin Permissions
+$lang = array_merge($lang, array(
+    'acl_u_foo'    => array('lang' => 'Can view foo', 'cat' => 'misc'),
+));