diff --git a/src/Task/dcdeprecated/dc2.26.php b/src/Task/dcdeprecated/dc2.26.php
new file mode 100644
index 0000000..8c559ae
--- /dev/null
+++ b/src/Task/dcdeprecated/dc2.26.php
@@ -0,0 +1,35 @@
+<?php
+/**
+ * @brief improve, a plugin for Dotclear 2
+ *
+ * @package Dotclear
+ * @subpackage Plugin
+ *
+ * @author Jean-Christian Denis and contributors
+ *
+ * @copyright Jean-Christian Denis
+ * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
+ */
+return [
+    'php' => [
+        ['Clearbricks::lib\(', 'Clearbricks::lib()', __('namespaces'), '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['Clearbricks::add\(', 'Clearbricks::add()', __('namespaces'), '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['toExtStatic\(', 'dcRecord::toExtStatic()', 'Dotclear\Database\MetaRecord::toStatic()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        //['(themes|plugins)->setModules\(', 'adminModulesList::setModules()', 'ModulesList::setDefine()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        //['(themes|plugins)->getModules\(', 'adminModulesList::getModules()', 'ModulesList::getDefines()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['->sanitizeModule\(', 'adminModulesList::sanitizeModule()', 'ModulesList::fillSanitizeModule()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['->fillSanitizeModule\(', 'adminModulesList::fillSanitizeModule()', 'ModulesList::fillSanitizeModule()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['->isDistributedModule\(', 'adminModulesList::isDistributedModule()', 'ModulesList::getDefine($id)->distributed', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['(themes|plugins)->getModules\(', 'dcModules::getModules()', 'dcModules::getDefines()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['(themes|plugins)->getAnyModules\(', 'dcModules::getAnyModules()', 'dcModules::getDefines()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['(themes|plugins)->getDisabledModules\(', 'dcModules::getDisabledModules()', "dcModules::getDefines(['state' => '!' . dcModuleDefine::STATE_ENABLED])", '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['(themes|plugins)->getHardDisabledModules\(', 'dcModules::getHardDisabledModules()', "dcModules::getDefines(['state' => dcModuleDefine::STATE_HARD_DISABLED])", '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['(themes|plugins)->getSoftDisabledModules\(', 'dcModules::getSoftDisabledModules()', "dcModules::getDefines(['state' => dcModuleDefine::STATE_SOFT_DISABLED])", '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['(themes|plugins)->moduleRoot\(', 'dcModules::moduleRoot()', "dcModules::getDefine(\$id, ['state' => dcModuleDefine::STATE_ENABLED])->root", '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['(themes|plugins)->loadNsFiles\(', 'dcModules::loadNsFiles()', __('nothing'), '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['store->getModules\(', 'dcStoreParser::getModules()', 'dcStoreParser::getDefines()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['store->get\(', 'dcStoreParser::get()', 'dcStoreParser::getDefine()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['store->search\(', 'dcStoreParser::search()', 'dcStoreParser::searchDefines()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+        ['dcUtils::removeDiacritics\(', 'dcUtils::removeDiacritics()', 'Text::removeDiacritics()', '2.27', 'https://dotclear.watch/Billet/Release-2.26'],
+    ],
+];
diff --git a/src/Task/dcdeprecated/dc2.27.php b/src/Task/dcdeprecated/dc2.27.php
index 6997c66..3839766 100644
--- a/src/Task/dcdeprecated/dc2.27.php
+++ b/src/Task/dcdeprecated/dc2.27.php
@@ -12,7 +12,7 @@
  */
 return [
     'php' => [
-        ['dcCore::autoload\(\)', 'dcCore::autoload() ', 'Autoloader::Me()', '2.27', 'https://dotclear.watch/Billet/Les-d%C3%A9pr%C3%A9ci%C3%A9s'],
+        ['dcCore::autoload\(\)', 'dcCore::autoload()', 'Autoloader::Me()', '2.27', 'https://dotclear.watch/Billet/Les-d%C3%A9pr%C3%A9ci%C3%A9s'],
         ['App::autoload\(\)', 'dcCore::autoload()', 'Autoloader::Me()', '2.27', 'https://dotclear.watch/Billet/Les-d%C3%A9pr%C3%A9ci%C3%A9s'],
         ['__error\(\)', '__error()', 'Autoloader::Me()', '2.27', 'https://dotclear.watch/Billet/La-classe-d-erreur'],
         //todo: logout
@@ -75,5 +75,8 @@ return [
         ['dcPublic', 'dcPublic', 'Dotclear\Core\Frontend\Utility', '2.27', 'https://dotclear.watch/Billet/D%C3%A9placement-de-classes'],
         ['dcNsProcess', 'dcNsProcess', 'Dotclear\Core\Process', '2.27', 'https://dotclear.watch/Billet/D%C3%A9placement-de-classes'],
         ['dcUpgrade', 'dcUpgrade', 'Dotclear\Core\Upgrade\Upgrade', '2.27', 'https://dotclear.watch/Billet/D%C3%A9placement-de-classes'],
+
+        ['dcCore::app\(\)->auth === null', 'is_null(dcCore::app()->auth)', 'isset(dcCore::app()->auth)', '2.27'],
+        ['is_null\(dcCore::app\(\)->auth\)', 'is_null(dcCore::app()->auth)', 'isset(dcCore::app()->auth)', '2.27'],
     ],
 ];