diff --git a/InnerDetector/InDetMonitoring/InDetPerformanceMonitoring/InDetPerformanceMonitoring/IDPerfMonZmumu.h b/InnerDetector/InDetMonitoring/InDetPerformanceMonitoring/InDetPerformanceMonitoring/IDPerfMonZmumu.h
index face171714f051030f3e14fce936d70b4a35d589..7582ed4088b24917b71621e0c2c9112b010740cc 100755
--- a/InnerDetector/InDetMonitoring/InDetPerformanceMonitoring/InDetPerformanceMonitoring/IDPerfMonZmumu.h
+++ b/InnerDetector/InDetMonitoring/InDetPerformanceMonitoring/InDetPerformanceMonitoring/IDPerfMonZmumu.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
 #ifndef IDPERFMON_ZMUMU_H
@@ -94,9 +94,9 @@ class IDPerfMonZmumu : public AthAlgorithm
   TTree*                          m_combStacoTree;
   TTree*                          m_combMuidTree;
 
-  mutable unsigned int            m_runNumber{};
-  mutable unsigned int            m_evtNumber{};
-  mutable unsigned int            m_lumi_block{};
+  unsigned int            m_runNumber{};
+  unsigned int            m_evtNumber{};
+  unsigned int            m_lumi_block{};
 
   double m_positive_px{};
   double m_positive_py{};
diff --git a/InnerDetector/InDetMonitoring/InDetPerformanceMonitoring/InDetPerformanceMonitoring/IDPerfMuonRefitter.h b/InnerDetector/InDetMonitoring/InDetPerformanceMonitoring/InDetPerformanceMonitoring/IDPerfMuonRefitter.h
index 5f07ba2ae619ec5a86a12c77ca69f07b90b02464..574b5c8faa37b3a40ad4253b9121f7d487e3caeb 100755
--- a/InnerDetector/InDetMonitoring/InDetPerformanceMonitoring/InDetPerformanceMonitoring/IDPerfMuonRefitter.h
+++ b/InnerDetector/InDetMonitoring/InDetPerformanceMonitoring/InDetPerformanceMonitoring/IDPerfMuonRefitter.h
@@ -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
 */
 
 #ifndef IDPerfMuonRefitterTER_H
@@ -43,9 +43,9 @@ class IDPerfMuonRefitter : public AthAlgorithm
   std::string m_outputTracksName;
 
 
-  mutable int m_N_Muons;
-  mutable int m_N_MuonsRefit;
-  mutable int m_N_MuonRefitFailures;
+  int m_N_Muons;
+  int m_N_MuonsRefit;
+  int m_N_MuonRefitFailures;
 
   PerfMonServices::CONTAINERS m_container;