diff --git a/src/Bernard/Message/DefaultMessage.php b/src/Bernard/Message/DefaultMessage.php
index e4b5f70c..d36fb9f6 100644
--- a/src/Bernard/Message/DefaultMessage.php
+++ b/src/Bernard/Message/DefaultMessage.php
@@ -19,7 +19,7 @@ public function __construct($name, array $parameters = array())
             $this->$k = $v;
         }
 
-        $this->name = preg_replace('/(^([0-9]+))|([^[:alnum:]-_+])/i', '', $name);
+        $this->name = preg_replace('/(^([0-9]+))|([^[:alnum:]\-_+])/i', '', $name);
     }
 
     /**