diff --git a/MuonSpectrometer/MuonReconstruction/MuonDataPrep/MuonTGMeasAssocAlg/src/MuonTGMeasAssocAlg.cxx b/MuonSpectrometer/MuonReconstruction/MuonDataPrep/MuonTGMeasAssocAlg/src/MuonTGMeasAssocAlg.cxx
index cf383eb45366df9a1ab8550fb128b12c9e8a4db5..3e54c1cda5f26f73a853d982ca1109db08755c97 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonDataPrep/MuonTGMeasAssocAlg/src/MuonTGMeasAssocAlg.cxx
+++ b/MuonSpectrometer/MuonReconstruction/MuonDataPrep/MuonTGMeasAssocAlg/src/MuonTGMeasAssocAlg.cxx
@@ -172,10 +172,6 @@ StatusCode Muon::MuonTGMeasAssocAlg::execute()
     if ( !sc.isFailure() && m_writeTgSegments ) sc = storeSegments();
   }
 
-  if ( m_muonTgTool ) {
-    m_muonTgTool->updateAssocMeas(m_allHits,m_allSegments);
-  }
-
   return StatusCode::SUCCESS;
 }
 
diff --git a/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonTGRecTools/MuonTGRecTools/IMuonTGMeasTool.h b/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonTGRecTools/MuonTGRecTools/IMuonTGMeasTool.h
index 48286f5607e7286a0053604e210fe74b302b0237..7da479b7a49984c3c8a01242b6351366f57fb46e 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonTGRecTools/MuonTGRecTools/IMuonTGMeasTool.h
+++ b/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonTGRecTools/MuonTGRecTools/IMuonTGMeasTool.h
@@ -1,23 +1,14 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
-///////////////////////////////////////////////////////////////////
-// IMuonTGMeasTool.h, (c) ATLAS Detector Softwareop 
-///////////////////////////////////////////////////////////////////
-
 #ifndef MUONTGRECTOOLS_IMUONTGMEASTOOL_H
 #define MUONTGRECTOOLS_IMUONTGMEASTOOL_H
 
-// Gaudi
 #include "GaudiKernel/IAlgTool.h"
-
 #include "TrkGeometry/TrackingGeometry.h"
-
 #include "MuonTGRecTools/MuonTGHits.h"
 #include "MuonTGRecTools/MuonTGSegments.h"
-
-//Amg
 #include "EventPrimitives/EventPrimitives.h"
 
 namespace Muon{
@@ -42,7 +33,6 @@ public:
   static const InterfaceID& interfaceID()
      { return IID_IMuonTGMeasTool; };
 
-  virtual void updateAssocMeas( MuonTGHits*, MuonTGSegments* ) const=0;
   virtual const std::vector<const Trk::PrepRawData*>* getMeasurementOnLayer(const Trk::Layer* lay) const=0;
   virtual const std::vector<const Trk::PrepRawData*>* getEtaPhiMeasurementOnLayer(const Trk::Layer* lay, bool phi) const=0;
   virtual const std::vector<const Trk::Segment*>* getSegments(const Trk::DetachedTrackingVolume* station) const=0;
diff --git a/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonTGRecTools/MuonTGRecTools/MuonTGMeasurementTool.h b/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonTGRecTools/MuonTGRecTools/MuonTGMeasurementTool.h
index ca3b9f8847a633105b53527113f2b5f136de785a..c057ed1b5ec1751ce1ec781267df1a479c36d602 100644
--- a/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonTGRecTools/MuonTGRecTools/MuonTGMeasurementTool.h
+++ b/MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonTGRecTools/MuonTGRecTools/MuonTGMeasurementTool.h
@@ -61,7 +61,6 @@ public:
   virtual StatusCode initialize();
   virtual StatusCode finalize();
 
-  void updateAssocMeas( MuonTGHits*, MuonTGSegments* ) const;
   const std::vector<const Trk::PrepRawData*>* getMeasurementOnLayer(const Trk::Layer* lay) const;
   const std::vector<const Trk::PrepRawData*>* getEtaPhiMeasurementOnLayer(const Trk::Layer* lay, bool phi) const;
   const std::vector<const Trk::Segment*>* getSegments(const Trk::DetachedTrackingVolume* station) const;
@@ -108,18 +107,7 @@ private:
 
 };
 
-} 
-
-inline void Muon::MuonTGMeasurementTool::updateAssocMeas( Muon::MuonTGHits* assocHits,
-                                                          Muon::MuonTGSegments* assocSegments ) const
-{ 
-  if (Gaudi::Concurrency::ConcurrencyFlags::concurrent()) {
-    ATH_MSG_WARNING("Access to Muon::MuonTGMeasurementTool::updateAssocMeas() blocked due to thread safety concerns");
-  } else {
-    m_hits = assocHits;
-    m_segments = assocSegments; 
-  }
-} 
+}
 
 #endif //MUONTGRECTOOLS_MUONTGMEASUREMENTTOOL_H