diff --git a/tests/functional/extension_acp_test.php b/tests/functional/extension_acp_test.php
index 5f02158e20..8a724f2133 100644
--- a/tests/functional/extension_acp_test.php
+++ b/tests/functional/extension_acp_test.php
@@ -157,7 +157,7 @@ class phpbb_functional_extension_acp_test extends phpbb_functional_test_case
 		$this->assertContainsLang('EXTENSION_ACTIONS', $crawler->filter('div.main thead')->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', 'phpBB Moo Extension'), $crawler->filter('.errorbox')->text());
+		$this->assertContains($this->lang('EXTENSION_ENABLE_CONFIRM', 'phpBB Moo Extension'), $crawler->filter('#main')->text());
 	}
 
 	public function test_disable_pre()
@@ -169,7 +169,7 @@ class phpbb_functional_extension_acp_test extends phpbb_functional_test_case
 		$this->assertContainsLang('EXTENSION_ACTIONS', $crawler->filter('div.main thead')->text());
 
 		$crawler = self::request('GET', 'adm/index.php?i=acp_extensions&mode=main&action=disable_pre&ext_name=vendor2%2Ffoo&sid=' . $this->sid);
-		$this->assertContains($this->lang('EXTENSION_DISABLE_CONFIRM', 'phpBB Foo Extension'), $crawler->filter('.errorbox')->text());
+		$this->assertContains($this->lang('EXTENSION_DISABLE_CONFIRM', 'phpBB Foo Extension'), $crawler->filter('#main')->text());
 	}
 
 	public function test_delete_data_pre()