diff --git a/MuonSpectrometer/MuonTruthAlgs/src/MuonDetailedTrackTruthMaker.cxx b/MuonSpectrometer/MuonTruthAlgs/src/MuonDetailedTrackTruthMaker.cxx
index 4d540f98dac0a9be1702b0031cda2eb5c267fed1..ad88b6e545abb7220f430305bc8515ccc232cf42 100755
--- a/MuonSpectrometer/MuonTruthAlgs/src/MuonDetailedTrackTruthMaker.cxx
+++ b/MuonSpectrometer/MuonTruthAlgs/src/MuonDetailedTrackTruthMaker.cxx
@@ -57,7 +57,7 @@ StatusCode MuonDetailedTrackTruthMaker::initialize()
   }
 
   m_detailedTrackTruthNames.reserve ( m_trackCollectionNames.size());
-  for(int i=0;i<m_trackCollectionNames.size();i++){
+  for(unsigned int i=0;i<m_trackCollectionNames.size();i++){
     m_detailedTrackTruthNames.emplace_back(m_trackCollectionNames.at(i).key()+"Truth");
     ATH_MSG_INFO("process "<<m_trackCollectionNames.at(i).key()<<" for detailed truth collection "<<m_detailedTrackTruthNames.at(i).key());
   }
@@ -81,8 +81,6 @@ StatusCode MuonDetailedTrackTruthMaker::finalize()
 StatusCode MuonDetailedTrackTruthMaker::execute() {
   ATH_MSG_DEBUG( "MuonDetailedTrackTruthMaker::execute()");
 
-  StatusCode sc;
-
   //----------------------------------------------------------------
   // Retrieve prep raw data truth
   std::vector<const PRD_MultiTruthCollection*> prdCollectionVector;