diff --git a/workflow/engine/classes/class.derivation.php b/workflow/engine/classes/class.derivation.php
index 9c3328886..88416c60d 100755
--- a/workflow/engine/classes/class.derivation.php
+++ b/workflow/engine/classes/class.derivation.php
@@ -194,7 +194,7 @@ class Derivation
 
                     $pmScript = new PMScript();
                     $pmScript->setFields($arrayApplicationData["APP_DATA"]);
-                    $pmScript->setScript($arrayRouteData["ROU_CONDITION"]);
+                    $pmScript->setScript("( ".$arrayRouteData["ROU_CONDITION"]." )");
                     $flagContinue = $pmScript->evaluate();
                 }