diff --git a/DDG4/include/DDG4/Geant4Handle.h b/DDG4/include/DDG4/Geant4Handle.h
index c430c81055d2269e26606ad95c981fad6b979ad4..d682ac984619ec7568716e838c032f68f464dfcb 100644
--- a/DDG4/include/DDG4/Geant4Handle.h
+++ b/DDG4/include/DDG4/Geant4Handle.h
@@ -12,6 +12,7 @@
 //
 //==========================================================================
 
+#ifndef DD4HEP_DDG4_GEANT4SETUP_H
 #define DD4HEP_DDG4_GEANT4SETUP_H
 
 // Framework include files