diff --git a/admin/inc/class.admin_categories.inc.php b/admin/inc/class.admin_categories.inc.php
index 3dbd3d5db1..059e24717d 100644
--- a/admin/inc/class.admin_categories.inc.php
+++ b/admin/inc/class.admin_categories.inc.php
@@ -317,7 +317,7 @@ class admin_categories
 		}
 
 		Framework::includeJS('.','global_categories','admin');
-		translation::add_app('admin');
+		Api\Translation::add_app('admin');
 
 		$readonlys['button[delete]'] = !$content['id'] || !self::$acl_delete ||		// cant delete not yet saved category
 			$appname != $content['appname'] || // Can't edit a category from a different app
diff --git a/admin/inc/class.admin_customfields.inc.php b/admin/inc/class.admin_customfields.inc.php
index 3b05906a3f..5161b1cea3 100644
--- a/admin/inc/class.admin_customfields.inc.php
+++ b/admin/inc/class.admin_customfields.inc.php
@@ -269,7 +269,7 @@ class admin_customfields
 
 		// Make sure app css & lang get loaded, extending app might cause et2 to miss it
 		Framework::includeCSS('admin','app');
-		translation::add_app('admin');
+		Api\Translation::add_app('admin');
 
 		$GLOBALS['egw_info']['flags']['app_header'] = $GLOBALS['egw_info']['apps'][$this->appname]['title'].' - '.lang('Custom fields');
 
diff --git a/api/src/Header/Authenticate.php b/api/src/Header/Authenticate.php
index 4ff35484df..1afef04274 100644
--- a/api/src/Header/Authenticate.php
+++ b/api/src/Header/Authenticate.php
@@ -115,7 +115,7 @@ class Authenticate
 			{
 				$realm .= ': '.$GLOBALS['egw']->session->reason;
 			}
-			header('WWW-Authenticate: Basic realm="'.$realm.'"');// draft-reschke-basicauth-enc-06 adds, accept-charset="'.translation::charset().'"');
+			header('WWW-Authenticate: Basic realm="'.$realm.'"');// draft-reschke-basicauth-enc-06 adds, accept-charset="'.Api\Translation::charset().'"');
 			self::digest_header($realm);
 			header('HTTP/1.1 401 Unauthorized');
 			header('X-WebDAV-Status: 401 Unauthorized', true);