diff --git a/InnerDetector/InDetDetDescr/TRT_GeoModel/CMakeLists.txt b/InnerDetector/InDetDetDescr/TRT_GeoModel/CMakeLists.txt
index ecdc2f7d4815e2291b065e3fbf75ea63d0db4193..35003c58ac518178e7802573f2c394ce05f90093 100644
--- a/InnerDetector/InDetDetDescr/TRT_GeoModel/CMakeLists.txt
+++ b/InnerDetector/InDetDetDescr/TRT_GeoModel/CMakeLists.txt
@@ -16,6 +16,7 @@ atlas_depends_on_subdirs( PUBLIC
                           InnerDetector/InDetDetDescr/InDetReadoutGeometry
 			  InnerDetector/InDetDetDescr/TRT_ReadoutGeometry
                           PRIVATE
+                          Control/CxxUtils
                           Control/SGTools
                           Control/StoreGate
                           Database/AthenaPOOL/AthenaPoolUtilities
@@ -37,7 +38,7 @@ atlas_add_component( TRT_GeoModel
 		     src/*.cxx
                      src/components/*.cxx
                      INCLUDE_DIRS ${CORAL_INCLUDE_DIRS}
-                     LINK_LIBRARIES ${CORAL_LIBRARIES} ${GEOMODELCORE_LIBRARIES} AthenaKernel GeoModelUtilities GaudiKernel TRT_ConditionsServicesLib InDetGeoModelUtils InDetReadoutGeometry TRT_ReadoutGeometry SGTools StoreGateLib SGtests AthenaPoolUtilities DetDescrConditions IdDictDetDescr TRT_ConditionsData InDetIdentifier GeometryDBSvcLib )
+                     LINK_LIBRARIES ${CORAL_LIBRARIES} ${GEOMODELCORE_LIBRARIES} AthenaKernel GeoModelUtilities GaudiKernel TRT_ConditionsServicesLib InDetGeoModelUtils InDetReadoutGeometry TRT_ReadoutGeometry CxxUtils SGTools StoreGateLib SGtests AthenaPoolUtilities DetDescrConditions IdDictDetDescr TRT_ConditionsData InDetIdentifier GeometryDBSvcLib )
 
 atlas_add_test( TRT_GMConfig_test
                 SCRIPT test/TRT_GMConfig_test.py
diff --git a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetDescrDB_ParameterInterface.cxx b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetDescrDB_ParameterInterface.cxx
index 1111e90d1eccd97bd41c8f8eff6f8387eeb2e9f2..d8e1f3c522315da71e120f2b97c0c437ffe34fcb 100755
--- a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetDescrDB_ParameterInterface.cxx
+++ b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetDescrDB_ParameterInterface.cxx
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
 #include "TRT_DetDescrDB_ParameterInterface.h"
@@ -503,7 +503,7 @@ const GeoTrf::Transform3D &
 TRT_DetDescrDB_ParameterInterface::partTransform(const std::string & partName) const
 {
   if (m_placements) return m_placements->transform(partName);
-  static GeoTrf::Transform3D unitTransform = GeoTrf::Transform3D::Identity();
+  static const GeoTrf::Transform3D unitTransform = GeoTrf::Transform3D::Identity();
   return unitTransform;
 }
 
diff --git a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetectorTool.cxx b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetectorTool.cxx
index c01f2c5266e9ad2624a8267fc0d67869f39f279f..e842093a2fd41e971c13fe2507b1137d759fee0d 100755
--- a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetectorTool.cxx
+++ b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetectorTool.cxx
@@ -20,6 +20,8 @@
 #include "AthenaKernel/ClassID_traits.h"
 #include "SGTools/DataProxy.h"
 
+#include "CxxUtils/checker_macros.h"
+
 ////////////////////////////////////////////////////////////////////////////////////////////////////////
 // Please consult the README for more information about which options to set in your joboptions file. //
 ////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -220,7 +222,7 @@ StatusCode TRT_DetectorTool::create()
 
 
 StatusCode 
-TRT_DetectorTool::registerCallback()
+TRT_DetectorTool::registerCallback ATLAS_NOT_THREAD_SAFE ()
 {
   // This callback is kept because the folder never changes.