--- PamVMC_update/PamG4RunConfiguration/src/PamG4RegionConstruction.cxx	2013/10/15 15:52:33	1.1.1.1
+++ PamVMC_update/PamG4RunConfiguration/src/PamG4RegionConstruction.cxx	2015/03/27 15:41:00	1.2
@@ -1,5 +1,6 @@
 #include "PamG4RegionConstruction.h"
 
+#include "G4SystemOfUnits.hh"
 #include <G4Material.hh>
 #include <G4ParticleDefinition.hh>
 #include <G4Electron.hh>