diff --git a/NPSimulation/Core/PhysicsList.cc b/NPSimulation/Core/PhysicsList.cc
index c5d9324bdb81db09688c0850b10225f4ecbbdb5a..b86ebda169e23ffce9f12d174825610f59a0741f 100644
--- a/NPSimulation/Core/PhysicsList.cc
+++ b/NPSimulation/Core/PhysicsList.cc
@@ -40,7 +40,7 @@
 /////////////////////////////////////////////////////////////////////////////
 PhysicsList::PhysicsList() : G4VModularPhysicsList(){
     m_EmList = "Option4";
-    defaultCutValue = 0.01*mm;//0.2*mm;
+    defaultCutValue = 1*mm;//0.2*mm;
     opticalPhysicsList = NULL;
     
     ReadConfiguration("PhysicsListOption.txt");