diff --git a/Trigger/TrigEvent/TrigCaloEvent/src/TrigCaloClusterContainer.cxx b/Trigger/TrigEvent/TrigCaloEvent/src/TrigCaloClusterContainer.cxx
index e796cbb2c91253d70a085e14bea6a9c8be120100..33f6de6607cc9830326fabc1b7d853ce48e72449 100755
--- a/Trigger/TrigEvent/TrigCaloEvent/src/TrigCaloClusterContainer.cxx
+++ b/Trigger/TrigEvent/TrigCaloEvent/src/TrigCaloClusterContainer.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
 */
 
 
@@ -26,7 +26,7 @@ void
 TrigCaloClusterContainer::print ( void ) const {
 	std::cout << "TrigCaloClusterContainer with ";
 	std::cout << size() << " TrigCaloClusters" << std::endl;
-	for ( TrigCaloClusterContainer::const_iterator i = begin(); i!=end();i++)
+	for ( TrigCaloClusterContainer::const_iterator i = begin(); i!=end();++i)
 		(*i)->print();
 }
 
@@ -35,7 +35,7 @@ void
 TrigCaloClusterContainer::print ( MsgStream& log ) const {
 	log <<MSG::DEBUG<< "TrigCaloClusterContainer with ";
 	log <<MSG::DEBUG<< size() << " TrigCaloClusters" << endmsg;
-	for ( TrigCaloClusterContainer::const_iterator i = begin(); i!=end();i++)
+	for ( TrigCaloClusterContainer::const_iterator i = begin(); i!=end();++i)
 		(*i)->print(log);
 }
 
diff --git a/Trigger/TrigEvent/TrigCaloEvent/src/TrigTauClusterDetailsContainer.cxx b/Trigger/TrigEvent/TrigCaloEvent/src/TrigTauClusterDetailsContainer.cxx
index 5e7d5515f2e21ed1b9793ec70db97bf586ab1dd0..a490ddb86ab56f91e56183ea102d7d59e789d7fa 100755
--- a/Trigger/TrigEvent/TrigCaloEvent/src/TrigTauClusterDetailsContainer.cxx
+++ b/Trigger/TrigEvent/TrigCaloEvent/src/TrigTauClusterDetailsContainer.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
 */
 
 
@@ -24,7 +24,7 @@ void
 TrigTauClusterDetailsContainer::print ( void ) const {
 	std::cout << "TrigTauClusterDetailsContainer with ";
 	std::cout << size() << " TrigTauClusterDetails" << std::endl;
-	for ( TrigTauClusterDetailsContainer::const_iterator i = begin(); i!=end();i++)
+	for ( TrigTauClusterDetailsContainer::const_iterator i = begin(); i!=end();++i)
 		(*i)->print();
 }
 
@@ -33,7 +33,7 @@ void
 TrigTauClusterDetailsContainer::print ( MsgStream& log ) const {
 	log <<MSG::DEBUG<< "TrigTauClusterDetailsContainer with ";
 	log <<MSG::DEBUG<< size() << " TrigTauClusterDetails" << endmsg;
-	for ( TrigTauClusterDetailsContainer::const_iterator i = begin(); i!=end();i++)
+	for ( TrigTauClusterDetailsContainer::const_iterator i = begin(); i!=end();++i)
 		(*i)->print(log);
 }