diff --git a/NPSimulation/Core/DetectorConstruction.cc b/NPSimulation/Core/DetectorConstruction.cc
index a9e0916b35052910b83b63e4f86dd065b337bf99..e4539f551db2e4a3cbd370f2105a238a38e96466 100644
--- a/NPSimulation/Core/DetectorConstruction.cc
+++ b/NPSimulation/Core/DetectorConstruction.cc
@@ -132,10 +132,7 @@ G4VPhysicalVolume* DetectorConstruction::ReadConfigurationFile(){
   string DataBuffer;
   bool cGeneralTarget=false;
   bool cGeneralChamber=false;
-  set<string> check;
-  
-
-
+  std::set<string> check;
   
   int VerboseLevel = NPOptionManager::getInstance()->GetVerboseLevel();
   cout << "\033[1;36m" ;