diff --git a/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimParametrization/CMakeLists.txt b/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimParametrization/CMakeLists.txt
index f5edef2dd74dce4a9b8f9fb4a8d3919aefc05707..8a185b740c7c967c00ba2719577c4263964ab3d6 100644
--- a/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimParametrization/CMakeLists.txt
+++ b/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimParametrization/CMakeLists.txt
@@ -60,6 +60,8 @@ atlas_add_root_dictionary( ISF_FastCaloSimParametrizationLib
                            ISF_FastCaloSimParametrization/TFCSSimpleLateralShapeParametrization.h
                            ISF_FastCaloSimParametrization/TreeReader.h
                            ISF_FastCaloSimParametrization/FCS_Cell.h
+                           ISF_FastCaloSimParametrization/CaloGeometry.h
+                           ISF_FastCaloSimParametrization/CaloGeometryLookup.h 
                            Root/LinkDef.h
                            EXTERNAL_PACKAGES  ROOT HepPDT XercesC CLHEP HepMC Geant4 )
 
diff --git a/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimParametrization/Root/LinkDef.h b/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimParametrization/Root/LinkDef.h
index 1eccc4d81a15895d5728077224e73243f9f02f9e..bd8a2c3205c53cf72416ab3edc6d74a4459f8ce0 100755
--- a/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimParametrization/Root/LinkDef.h
+++ b/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimParametrization/Root/LinkDef.h
@@ -17,8 +17,6 @@
 #pragma link C++ struct std::vector<FCS_matchedcell>+;
 #pragma link C++ struct FCS_matchedcellvector+;
 #pragma link C++ class std::vector<Float_t>+;
-#pragma link C++ struct FCS_truth+;
-#pragma link C++ struct std::vector<FCS_truth>+;
 #pragma link C++ class std::vector<std::vector<float> >+;
 #ifndef CaloGeometryFromFile_h
 #pragma link C++ class CaloGeometryLookup;