diff --git a/workflow/engine/methods/services/soap2.php b/workflow/engine/methods/services/soap2.php
index 3a8395199..aa5d8cda4 100755
--- a/workflow/engine/methods/services/soap2.php
+++ b/workflow/engine/methods/services/soap2.php
@@ -681,7 +681,7 @@ function NewCaseImpersonate ($params)
 
     ///////
     $ws = new wsBase();
-    $res = $ws->newCaseImpersonate( $params->processId, $params->userId, $params->variables );
+    $res = $ws->newCaseImpersonate($params->processId, $params->userId, $params->variables, $params->taskId);
 
     return $res;
 }