diff --git a/StarVMC/geant3/TGeant3/TGeant3.h b/StarVMC/geant3/TGeant3/TGeant3.h
index 1d5cd46018f..57a243b4739 100644
--- a/StarVMC/geant3/TGeant3/TGeant3.h
+++ b/StarVMC/geant3/TGeant3/TGeant3.h
@@ -1080,7 +1080,8 @@ class TGeant3 : public TVirtualMC {
 private:
   Int_t ConvertVolumePathString(const TString &volumeName,Int_t **lnam,
                                 Int_t **lnum);
-
+  virtual void ProcessEvent(Int_t);
+  virtual void ProcessEvent(Int_t, Bool_t);
 
 
 protected: