diff --git a/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/MdtVsRpcRawDataMonitoring/src/MdtVsRpcRawDataValAlg.cxx b/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/MdtVsRpcRawDataMonitoring/src/MdtVsRpcRawDataValAlg.cxx
index 9d182297fa03fb0cc9e564fff0c4cd16397d0376..22003c36fce59ad00f780c57da4d7e5ebce40e88 100755
--- a/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/MdtVsRpcRawDataMonitoring/src/MdtVsRpcRawDataValAlg.cxx
+++ b/MuonSpectrometer/MuonValidation/MuonDQA/MuonRawDataMonitoring/MdtVsRpcRawDataMonitoring/src/MdtVsRpcRawDataValAlg.cxx
@@ -134,7 +134,6 @@ StatusCode MdtVsRpcRawDataValAlg::fillHistograms()
   
   
     int nPrd = 0;
-    Identifier dig_id;
   
     std::string type="RPC";
 
@@ -198,8 +197,8 @@ StatusCode MdtVsRpcRawDataValAlg::fillHistograms()
 	      std::string hardware_name=convertChamberName(irpcstationName,irpcstationEta,irpcstationPhi,type) ;
   	  	  
 	      if (selectChambersRange(hardware_name, m_chamberName, 
-				      m_idHelperSvc->rpcIdHelper().stationEta(dig_id), m_StationEta,
-				      m_idHelperSvc->rpcIdHelper().stationPhi(dig_id), m_StationPhi, m_StationSize) && chambersCosmicSetup(hardware_name,m_cosmicStation)) {	 
+				      m_idHelperSvc->rpcIdHelper().stationEta(prd_id), m_StationEta,
+				      m_idHelperSvc->rpcIdHelper().stationPhi(prd_id), m_StationPhi, m_StationSize) && chambersCosmicSetup(hardware_name,m_cosmicStation)) {	 
 
 		//define layer
                 int imdt_multi_near = 0;