diff --git a/Trigger/TrigT1/TrigT1CaloCalibUtils/TrigT1CaloCalibUtils/ATLAS_CHECK_THREAD_SAFETY b/Trigger/TrigT1/TrigT1CaloCalibUtils/TrigT1CaloCalibUtils/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..03ad5ea50020526e489f574d40168b359fc7810e
--- /dev/null
+++ b/Trigger/TrigT1/TrigT1CaloCalibUtils/TrigT1CaloCalibUtils/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+Trigger/TrigT1/TrigT1CaloCalibUtils
diff --git a/Trigger/TrigT1/TrigT1CaloCalibUtils/src/L1CaloRampMaker.cxx b/Trigger/TrigT1/TrigT1CaloCalibUtils/src/L1CaloRampMaker.cxx
index 7aecf0681cdb54e805f14a10bc4e02dd73f1355c..3e852a5f9fce2473082ef64c1d5fab9408c370fc 100755
--- a/Trigger/TrigT1/TrigT1CaloCalibUtils/src/L1CaloRampMaker.cxx
+++ b/Trigger/TrigT1/TrigT1CaloCalibUtils/src/L1CaloRampMaker.cxx
@@ -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
 */
 
 #include "TrigT1CaloCalibUtils/L1CaloRampMaker.h"
@@ -37,8 +37,8 @@
 
 // define Accessors
 namespace {
-xAOD::TriggerTower::ConstAccessor<float> ttCellsEnergy("CaloCellEnergy");
-xAOD::TriggerTower::ConstAccessor<float> ttCellsET("CaloCellET");
+  const xAOD::TriggerTower::ConstAccessor<float> ttCellsEnergy("CaloCellEnergy");
+  const xAOD::TriggerTower::ConstAccessor<float> ttCellsET("CaloCellET");
 }
 
 L1CaloRampMaker::L1CaloRampMaker(const std::string& name, ISvcLocator* pSvcLocator)