diff --git a/phpBB/includes/acp/acp_extensions.php b/phpBB/includes/acp/acp_extensions.php
index 89fdc8b863..0c9bc0deab 100644
--- a/phpBB/includes/acp/acp_extensions.php
+++ b/phpBB/includes/acp/acp_extensions.php
@@ -174,11 +174,6 @@ class acp_extensions
 					trigger_error($user->lang['EXTENSION_NOT_ENABLEABLE'] . adm_back_link($this->u_action), E_USER_WARNING);
 				}
 
-				if ($phpbb_extension_manager->is_enabled($ext_name))
-				{
-					redirect($this->u_action);
-				}
-
 				try
 				{
 					while ($phpbb_extension_manager->enable_step($ext_name))
diff --git a/tests/test_framework/phpbb_functional_test_case.php b/tests/test_framework/phpbb_functional_test_case.php
index b6769f08d0..844caa8f54 100644
--- a/tests/test_framework/phpbb_functional_test_case.php
+++ b/tests/test_framework/phpbb_functional_test_case.php
@@ -410,6 +410,18 @@ class phpbb_functional_test_case extends phpbb_test_case
 		$form = $crawler->selectButton('Enable')->form();
 		$crawler = self::submit($form);
 		$this->add_lang('acp/extensions');
+
+		$meta_refresh = $crawler->filter('meta[http-equiv="refresh"]');
+
+		// Wait for extension to be fully enabled
+		while (sizeof($meta_refresh))
+		{
+			preg_match('#url=.+/(adm+.+)#', $meta_refresh->attr('content'), $match);
+			$url = $match[1];
+			$crawler = self::request('POST', $url);
+			$meta_refresh = $crawler->filter('meta[http-equiv="refresh"]');
+		}
+
 		$this->assertContainsLang('EXTENSION_ENABLE_SUCCESS', $crawler->filter('div.successbox')->text());
 
 		$this->logout();