diff --git a/NPSimulation/Core/PhysicsList.cc b/NPSimulation/Core/PhysicsList.cc
index 9f6fa6a693ff94b238de48f9c0ac527c243496ad..284541e74f7baf8da981ead83bf0c7bb8dd8303b 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");