diff --git a/tests/functional/extension_acp_test.php b/tests/functional/extension_acp_test.php
index 401b18f11c..029f13b4f1 100644
--- a/tests/functional/extension_acp_test.php
+++ b/tests/functional/extension_acp_test.php
@@ -83,18 +83,18 @@ class phpbb_functional_extension_acp_test extends phpbb_functional_test_case
         $this->assertCount(5, $crawler->filter('.ext_disabled'));
 
         $this->assertContains('phpBB Foo Extension', $crawler->filter('.ext_enabled')->eq(0)->text());
-        $this->assertContainsLang('PURGE', $crawler->filter('.ext_enabled')->eq(0)->text());
+        $this->assertContainsLang('EXTENSION_UNINSTALL', $crawler->filter('.ext_enabled')->eq(0)->text());
 
-        $this->assertContains('The "test2" extension is not valid.', $crawler->filter('.ext_disabled')->eq(0)->text());
+        $this->assertContains('The “test2” extension is not valid.', $crawler->filter('.ext_disabled')->eq(0)->text());
 
-        $this->assertContains('The "test3" extension is not valid.', $crawler->filter('.ext_disabled')->eq(1)->text());
+        $this->assertContains('The “test3” extension is not valid.', $crawler->filter('.ext_disabled')->eq(1)->text());
 
         $this->assertContains('phpBB Moo Extension', $crawler->filter('.ext_disabled')->eq(2)->text());
         $this->assertContainsLang('DETAILS', $crawler->filter('.ext_disabled')->eq(2)->text());
-        $this->assertContainsLang('ENABLE', $crawler->filter('.ext_disabled')->eq(2)->text());
-        $this->assertContainsLang('PURGE', $crawler->filter('.ext_disabled')->eq(2)->text());
+        $this->assertContainsLang('EXTENSION_ENABLE', $crawler->filter('.ext_disabled')->eq(2)->text());
+        $this->assertContainsLang('EXTENSION_UNINSTALL', $crawler->filter('.ext_disabled')->eq(2)->text());
 
-        $this->assertContains('The "bar" extension is not valid.', $crawler->filter('.ext_disabled')->eq(3)->text());
+        $this->assertContains('The “bar” extension is not valid.', $crawler->filter('.ext_disabled')->eq(3)->text());
 	}
 
 	public function test_details()
@@ -148,8 +148,8 @@ class phpbb_functional_extension_acp_test extends phpbb_functional_test_case
         $this->assertContainsLang('EXTENSION_OPTIONS', $crawler->filter('html')->text());
         $this->assertContainsLang('EXTENSION_ACTIONS', $crawler->filter('html')->text());
 
-        $crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=enable_pre&ext_name=vendor%2Fmoo&sid=' . $this->sid);
-        $this->assertContainsLang('ENABLE_CONFIRM', $crawler->filter('html')->text());
+		$crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=enable_pre&ext_name=vendor%2Fmoo&sid=' . $this->sid);
+		$this->assertContains($this->lang('EXTENSION_ENABLE_CONFIRM', 'vendor/moo'), $crawler->filter('html')->text());
 	}
 
 	public function test_disable_pre()
@@ -160,8 +160,8 @@ class phpbb_functional_extension_acp_test extends phpbb_functional_test_case
         $this->assertContainsLang('EXTENSION_OPTIONS', $crawler->filter('html')->text());
         $this->assertContainsLang('EXTENSION_ACTIONS', $crawler->filter('html')->text());
 
-        $crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=disable_pre&ext_name=foo&sid=' . $this->sid);
-        $this->assertContainsLang('DISABLE_CONFIRM', $crawler->filter('html')->text());
+		$crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=disable_pre&ext_name=foo&sid=' . $this->sid);
+		$this->assertContains($this->lang('EXTENSION_DISABLE_CONFIRM', 'foo'), $crawler->filter('html')->text());
 	}
 
 	public function test_purge_pre()
@@ -170,19 +170,19 @@ class phpbb_functional_extension_acp_test extends phpbb_functional_test_case
         $crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=purge_pre&ext_name=test2&sid=' . $this->sid);
         $this->assertContains('The required file does not exist', $crawler->filter('html')->text());
 
-        $crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=purge_pre&ext_name=foo&sid=' . $this->sid);
-        $this->assertContainsLang('PURGE_CONFIRM', $crawler->filter('html')->text());
+		$crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=purge_pre&ext_name=foo&sid=' . $this->sid);
+		$this->assertContains($this->lang('EXTENSION_UNINSTALL_CONFIRM', 'foo'), $crawler->filter('html')->text());
 	}
 
 	public function test_actions()
 	{
-        $crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=enable&ext_name=vendor%2Fmoo&sid=' . $this->sid);
-        $this->assertContainsLang('ENABLE_SUCCESS', $crawler->filter('html')->text());
+		$crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=enable&ext_name=vendor%2Fmoo&sid=' . $this->sid);
+		$this->assertContainsLang('EXTENSION_ENABLE_SUCCESS', $crawler->filter('html')->text());
 
-        $crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=disable&ext_name=vendor%2Fmoo&sid=' . $this->sid);
-        $this->assertContainsLang('DISABLE_SUCCESS', $crawler->filter('html')->text());
+		$crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=disable&ext_name=vendor%2Fmoo&sid=' . $this->sid);
+		$this->assertContainsLang('EXTENSION_DISABLE_SUCCESS', $crawler->filter('html')->text());
 
-        $crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=purge&ext_name=vendor%2Fmoo&sid=' . $this->sid);
-        $this->assertContainsLang('PURGE_SUCCESS', $crawler->filter('html')->text());
+		$crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=purge&ext_name=vendor%2Fmoo&sid=' . $this->sid);
+		$this->assertContainsLang('EXTENSION_UNINSTALL_SUCCESS', $crawler->filter('html')->text());
 	}
 }