diff --git a/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/MMPrepDataCnv_p1.cxx b/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/MMPrepDataCnv_p1.cxx
index 79e09653ff6d94bafbd7295540b3a05d90092ed3..93298d88b2abf0b36dbaa91ae46367240827d8dd 100644
--- a/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/MMPrepDataCnv_p1.cxx
+++ b/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/MMPrepDataCnv_p1.cxx
@@ -62,7 +62,7 @@ persToTrans( const Muon::MMPrepData_p1 *persObj, Muon::MMPrepData *transObj,MsgS
 }
 
 void MMPrepDataCnv_p1::
-transToPers( const Muon::MMPrepData *transObj, Muon::MMPrepData_p1 *persObj, MsgStream & log )
+transToPers( const Muon::MMPrepData *transObj, Muon::MMPrepData_p1 *persObj, MsgStream &)
 {
     persObj->m_locX     = transObj->localPosition()[Trk::locX];
     persObj->m_errorMat = (transObj->localCovariance())(0,0);
@@ -93,7 +93,6 @@ transToPers( const Muon::MMPrepData *transObj, Muon::MMPrepData_p1 *persObj, Msg
       // (this only works if the absolute value of the difference is smaller than 128)
       Identifier32::value_type rdoIdCompact = rdo_id.get_identifier32().get_compact(); // unsigned int
       int diff = (int)(rdoIdCompact-clusIdCompact);
-      if (abs(diff)>SCHAR_MAX) log << MSG::WARNING << "Difference between cluster and rdo Identifier (" << diff << ") larger than what can be stored (" << SCHAR_MAX << ")" << endmsg;
       rdoListPers.push_back((signed char)diff);
     } 
    
diff --git a/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/sTgcPrepDataCnv_p1.cxx b/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/sTgcPrepDataCnv_p1.cxx
index 30fcfa534c4d6ce775759c88eba1ba4092996cc3..b430a237a5b4ae986d210e56c23ce8e5a8bf46aa 100644
--- a/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/sTgcPrepDataCnv_p1.cxx
+++ b/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/sTgcPrepDataCnv_p1.cxx
@@ -60,7 +60,7 @@ persToTrans( const Muon::sTgcPrepData_p1 *persObj, Muon::sTgcPrepData *transObj,
 }
 
 void sTgcPrepDataCnv_p1::
-transToPers( const Muon::sTgcPrepData *transObj, Muon::sTgcPrepData_p1 *persObj, MsgStream & log )
+transToPers( const Muon::sTgcPrepData *transObj, Muon::sTgcPrepData_p1 *persObj, MsgStream & )
 {
     //log << MSG::DEBUG << "sTgcPrepDataCnv_p1::transToPers" << endmsg;
   persObj->m_locX         = transObj->localPosition()[Trk::locX];
@@ -84,7 +84,6 @@ transToPers( const Muon::sTgcPrepData *transObj, Muon::sTgcPrepData_p1 *persObj,
     // (this only works if the absolute value of the difference is smaller than 128)
     Identifier32::value_type rdoIdCompact = rdo_id.get_identifier32().get_compact(); // unsigned int
     int diff = (int)(rdoIdCompact-clusIdCompact);
-    if (abs(diff)>SCHAR_MAX) log << MSG::WARNING << "Difference between cluster and rdo Identifier (" << diff << ") larger than what can be stored (" << SCHAR_MAX << ")" << endmsg;
     rdoListPers.push_back((signed char)diff);
   } 
   
diff --git a/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/sTgcPrepDataCnv_p2.cxx b/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/sTgcPrepDataCnv_p2.cxx
index 85d0f35c6406404ff2201625723484ee7d2d2c31..90d8b373e3c6478dee838db4f4b1cff7bbad95bf 100644
--- a/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/sTgcPrepDataCnv_p2.cxx
+++ b/MuonSpectrometer/MuonCnv/MuonEventTPCnv/src/MuonPrepRawData/sTgcPrepDataCnv_p2.cxx
@@ -59,7 +59,7 @@ persToTrans( const Muon::sTgcPrepData_p2 *persObj, Muon::sTgcPrepData *transObj,
 }
 
 void sTgcPrepDataCnv_p2::
-transToPers( const Muon::sTgcPrepData *transObj, Muon::sTgcPrepData_p2 *persObj, MsgStream & log )
+transToPers( const Muon::sTgcPrepData *transObj, Muon::sTgcPrepData_p2 *persObj, MsgStream & )
 {
   persObj->m_locX         = transObj->localPosition()[Trk::locX];
   persObj->m_locY         = transObj->localPosition()[Trk::locY];
@@ -83,7 +83,6 @@ transToPers( const Muon::sTgcPrepData *transObj, Muon::sTgcPrepData_p2 *persObj,
     // (this only works if the absolute value of the difference is smaller than 128)
     Identifier32::value_type rdoIdCompact = rdo_id.get_identifier32().get_compact(); // unsigned int
     int diff = (int)(rdoIdCompact-clusIdCompact);
-    if (abs(diff)>SCHAR_MAX) log << MSG::WARNING << "Difference between cluster and rdo Identifier (" << diff << ") larger than what can be stored (" << SCHAR_MAX << ")" << endmsg;
     rdoListPers.push_back((signed char)diff);
   }