diff --git a/DDG4/include/DDG4/DDG4Dict.h b/DDG4/include/DDG4/DDG4Dict.h
index 175a1c4f582ff6dfaef5cbb4e821ae17069a4183..4ecf63eb27a62fbf0bc972272ca21600e7ad6721 100644
--- a/DDG4/include/DDG4/DDG4Dict.h
+++ b/DDG4/include/DDG4/DDG4Dict.h
@@ -85,7 +85,8 @@ namespace { class DDG4Dict {};   }
 
 /// Dictionaires for basic Hit data structures
 #pragma link C++ class dd4hep::sim::Geant4HitData+;
-#pragma link C++ class std::vector<dd4hep::sim::Geant4HitData*>+;
+namespace dd4hep { namespace sim { typedef Geant4HitData* Geant4HitData_ptr_t; }}
+#pragma link C++ class std::vector<dd4hep::sim::Geant4HitData_ptr_t>+;
 #pragma link C++ class dd4hep::sim::Geant4HitData::Contribution+;
 #pragma link C++ class dd4hep::sim::Geant4HitData::Contributions+;