diff --git a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRTDetectorFactory_Full.cxx b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRTDetectorFactory_Full.cxx
index 24eb98033cf9d9e1349641c23d06df3bc069501b..5d58bb23b0be63adccc7cfeafddf6fc39305df73 100755
--- a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRTDetectorFactory_Full.cxx
+++ b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRTDetectorFactory_Full.cxx
@@ -2157,7 +2157,7 @@ const GeoShape * TRTDetectorFactory_Full::makeModule ( double length, GeoTrf::Ve
 
 //
 //GeoPhysVol * TRTDetectorFactory_Full::makeStraw( double& activeGasZPosition, bool hasLargeDeadRegion /*= false*/ ) const {
-GeoPhysVol * TRTDetectorFactory_Full::makeStraw( double& activeGasZPosition, bool hasLargeDeadRegion /*= false*/, ActiveGasMixture gasMixture) const {
+GeoPhysVol * TRTDetectorFactory_Full::makeStraw( double& activeGasZPosition, bool hasLargeDeadRegion /*= false*/, ActiveGasMixture gasMixture) {
 
   double lengthOfInnerDeadRegion= hasLargeDeadRegion ? m_data->barrelLengthOfLargeDeadRegion : m_data->lengthOfDeadRegion ;
   double lengthOfActiveGas = (m_data->barrelLengthOfStraw-m_data->barrelLengthOfTwister)/2.0 - m_data->lengthOfDeadRegion - lengthOfInnerDeadRegion;
diff --git a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRTDetectorFactory_Full.h b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRTDetectorFactory_Full.h
index dd5eda243e4e5a01380499c520d1a5318026e9b4..5639c8a89ff6bead85eb7f53f9f4428a619e675f 100755
--- a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRTDetectorFactory_Full.h
+++ b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRTDetectorFactory_Full.h
@@ -86,7 +86,7 @@ class TRTDetectorFactory_Full : public InDetDD::DetectorFactoryBase  {
   const GeoShape * makeModule ( double length, GeoTrf::Vector2D corner1 ,  GeoTrf::Vector2D corner2, GeoTrf::Vector2D corner3,
 				GeoTrf::Vector2D corner4, GeoTrf::Transform3D & absolutePosition, double shrinkDist=0 ) const;
   //GeoPhysVol * makeStraw( double& activeGasZPosition, bool hasLargeDeadRegion=false ) const;
-  GeoPhysVol * makeStraw( double& activeGasZPosition, bool hasLargeDeadRegion=false, ActiveGasMixture gasMixture = GM_XENON) const;
+  GeoPhysVol * makeStraw( double& activeGasZPosition, bool hasLargeDeadRegion=false, ActiveGasMixture gasMixture = GM_XENON);
   //GeoFullPhysVol  *makeStrawPlane( size_t w ) const;
   GeoFullPhysVol  *makeStrawPlane( size_t w , ActiveGasMixture gasMixture = GM_XENON);
 
diff --git a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetDescrDB_ParameterInterface.h b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetDescrDB_ParameterInterface.h
index f28529a3f1ddd31b66b2fd9a22ebae56eef097dd..f7b336c9c88f4679d9a9358129e22f1e7cbb740b 100755
--- a/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetDescrDB_ParameterInterface.h
+++ b/InnerDetector/InDetDetDescr/TRT_GeoModel/src/TRT_DetDescrDB_ParameterInterface.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
 */
 
 #ifndef TRT_GEOMODEL_TRT_DETDESCRDB_PARAMETERINTERFACE_H
@@ -44,7 +44,7 @@ public:
 
   void SetValues();
 
-  MsgStream& msg (MSG::Level lvl) const { return m_athenaComps->msg(lvl); }
+  MsgStream& msg (MSG::Level lvl) { return m_athenaComps->msg(lvl); }
 
   
 private: