diff --git a/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/CscRawDataMonitoring/CscRdoValAlg.h b/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/CscRawDataMonitoring/CscRdoValAlg.h
index 9458a15bf20ba575e2b01ef8b795b9c55b1416d2..3d22459ba6c7150bc16386c3537cb84730d2b50f 100755
--- a/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/CscRawDataMonitoring/CscRdoValAlg.h
+++ b/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/CscRawDataMonitoring/CscRdoValAlg.h
@@ -113,7 +113,6 @@ class CscRdoValAlg: public ManagedMonitorToolBase
   
   TH2F *m_h2csc_rdo_eta_vs_phi_cluswidth;
   TH2F *m_h2csc_rdo_eta_vs_phi_cluswidth_signal;
-  TH2F *m_h2csc_rdo_eta_vs_phi_cluswidth_noise;
 
   std::vector<TH1 *>    m_regHShift   ,
                         m_regHExpert  ,
diff --git a/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/src/CSCSegmValAlg.cxx b/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/src/CSCSegmValAlg.cxx
index eb22a7fba561a1c23ca5fc46696a34c1e1845ca2..cc3fffdd83de182577b52cd86f1e92f4476d6164 100755
--- a/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/src/CSCSegmValAlg.cxx
+++ b/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/src/CSCSegmValAlg.cxx
@@ -596,7 +596,7 @@ StatusCode CSCSegmValAlg::fillHistograms() {
       for (Trk::SegmentCollection::const_iterator s = m_segms->begin();s != m_segms->end(); ++s) {
 
         // Get segm
-        Muon::MuonSegment *segm=dynamic_cast<Muon::MuonSegment*>(*s);
+        const Muon::MuonSegment *segm=dynamic_cast<const Muon::MuonSegment*>(*s);
 
         if (segm == 0) {
           ATH_MSG_ERROR( "no pointer to segm!!!" );
diff --git a/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/src/CscClusterValAlg.cxx b/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/src/CscClusterValAlg.cxx
index a71f18fb6732a53c84c153c466684dd128d0fefe..62cbd21816bb496c99cd15278068e9d3ada0e62c 100755
--- a/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/src/CscClusterValAlg.cxx
+++ b/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/CscRawDataMonitoring/src/CscClusterValAlg.cxx
@@ -834,7 +834,7 @@ void  CscClusterValAlg::FillCSCClusters( const CscPrepDataContainer& m_cols, con
     ATH_MSG_DEBUG ( " Begin loop over clusters ============================");
     for ( CscPrepDataCollection::const_iterator m_Itclu = m_clus.begin();
         m_Itclu != m_clus.end(); ++m_Itclu ) {
-      CscPrepData& m_iClus = **m_Itclu;
+      const CscPrepData& m_iClus = **m_Itclu;
       const std::vector<Identifier>& m_stripIds = m_iClus.rdoList();    
       float m_clu_charge = m_iClus.charge();
       float m_clu_time = m_iClus.time();