diff --git a/src/classes/PRunDataHandler.cpp b/src/classes/PRunDataHandler.cpp
index 59615825..c8c97a7e 100644
--- a/src/classes/PRunDataHandler.cpp
+++ b/src/classes/PRunDataHandler.cpp
@@ -4647,9 +4647,13 @@ Bool_t PRunDataHandler::WriteMusrRootFile(TString fln)
       str.Form("hDecay%03d", dataSet->GetHistoNo());
       length = dataSet->GetData()->size();
       histo = new TH1F(str.Data(), str.Data(), length+1, -0.5, static_cast<Double_t>(length)+0.5);
+      Int_t sum=0, entries=0;
       for (UInt_t j=0; j<length; j++) {
-        histo->SetBinContent(j+1, dataSet->GetData()->at(j));
+        entries = dataSet->GetData()->at(j);
+        histo->SetBinContent(j+1, entries);
+        sum += entries;
       }
+      histo->SetEntries(sum);
       histos.push_back(histo);
     }
   } else { // rebin > 1
@@ -4666,14 +4670,18 @@ Bool_t PRunDataHandler::WriteMusrRootFile(TString fln)
       length = dataSet->GetData()->size();
       histo = new TH1F(str.Data(), str.Data(), static_cast<Int_t>(length/fAny2ManyInfo->rebin)+1, -0.5, static_cast<Double_t>(static_cast<Int_t>(length/fAny2ManyInfo->rebin))+0.5);
       dataCount = 0;
+      Int_t sum=0, entries=0;
       for (UInt_t j=0; j<length; j++) {
         if ((j > 0) && (j % fAny2ManyInfo->rebin == 0)) {
           dataCount++;
           histo->SetBinContent(dataCount, dataRebin);
           dataRebin = 0;
         }
-        dataRebin += static_cast<UInt_t>(dataSet->GetData()->at(j));
+        entries = dataSet->GetData()->at(j);
+        sum += entries;
+        dataRebin += static_cast<UInt_t>(entries);
       }
+      histo->SetEntries(sum);
       histos.push_back(histo);
     }
   }