diff --git a/classes/cronlog-renderer.class.php b/classes/cronlog-renderer.class.php
index a4716790318e05acc645d61e7e8a013257631334..5a3b9eaae3cc82cee33f077f3aad8bca9aba1a36 100644
--- a/classes/cronlog-renderer.class.php
+++ b/classes/cronlog-renderer.class.php
@@ -83,7 +83,7 @@ class cronlogrenderer extends cronlog
      * @return string
      * 
      */
-    protected function _filterDatatable($sDatatable, $sFiltertext)
+    protected function _filterDatatable(string $sDatatable, string $sFiltertext): string
     {
         return '$(\'#' . $sDatatable . '\').dataTable().fnFilter(\'' . $sFiltertext . '\'); return false;';
     }
diff --git a/index.php b/index.php
index 2faac085160b6fc53a101bce3d758d95e157b775..b6c1765f6fb7086f22041e5eb99c4ee3b4eb391d 100644
--- a/index.php
+++ b/index.php
@@ -1,6 +1,6 @@
 <?php
 
-define("APP_VERSION", '2.2.0');
+define("APP_VERSION", '2.2.1');
 
 require_once('classes/render-adminlte.class.php');
 require_once('classes/cronlog-renderer.class.php');