diff --git a/application/models/Session.php b/application/models/Session.php
index 899de3e058e..4a431c8082e 100644
--- a/application/models/Session.php
+++ b/application/models/Session.php
@@ -69,7 +69,7 @@ public function afterFind()
     private function hexToStr($hex){
         $string='';
         for ($i=0; $i < strlen($hex)-1; $i+=2){
-            $string .= chr(hexdec($hex[$i].$hex[$i+1]));
+            $string .= chr( hexdec( $hex[$i].$hex[$i+1] ) );
         }
         return $string;
     }