diff --git a/app/Ninja/Datatables/EntityDatatable.php b/app/Ninja/Datatables/EntityDatatable.php
index a632a84538f7..793f5f4b91c1 100644
--- a/app/Ninja/Datatables/EntityDatatable.php
+++ b/app/Ninja/Datatables/EntityDatatable.php
@@ -103,7 +103,7 @@ class EntityDatatable
         $str = e($str);
 
         if (strlen($str) > $max) {
-            return '<span data-toggle="tooltip" data-placement="bottom" title="' . substr($str, 0, 500) . '">' . trim(substr($str, 0, $max)) . '...' . '</span>';
+            return '<span data-toggle="tooltip" data-placement="bottom" title="' . mb_substr($str, 0, 500) . '">' . trim(mb_substr($str, 0, $max)) . '...' . '</span>';
         } else {
             return $str;
         }