diff --git a/framework/helper.class.php b/framework/helper.class.php
index 5bf3c71ee9..0da1405d66 100644
--- a/framework/helper.class.php
+++ b/framework/helper.class.php
@@ -387,7 +387,7 @@ class helper extends baseHelper
                 return $value ? (string)$value : null;
             case 'string':
             default:
-                return (string)$value;
+                return trim((string)$value);
         }
     }