diff --git a/source/trunk/Model/XS/XSM_MLP.hxx b/source/trunk/Model/XS/XSM_MLP.hxx
index 0de9fdc825b505e13b3eb4fee4dda00a6743ccd4..e790c63ec26793858c5a390dae9429addd0cab3e 100644
--- a/source/trunk/Model/XS/XSM_MLP.hxx
+++ b/source/trunk/Model/XS/XSM_MLP.hxx
@@ -48,7 +48,7 @@ class XSM_MLP : public XSModel
 	 \param bool IsTimeStep, if true , one TMVA weihgt per step time is requiered otherwise it assumes time is part of the MLP inputs
 
 	 */
-	XSM_MLP(string TMVA_Weight_Directory,string InformationFile="",bool IsTimeStep=true);
+	XSM_MLP(string TMVA_Weight_Directory,string InformationFile="",bool IsTimeStep=false);
 	XSM_MLP(CLASSLogger* Log,string TMVA_Weight_Directory,string InformationFile="",bool IsTimeStep=false);
 	~XSM_MLP();
 	//{