diff --git a/src/classes/PRunAsymmetry.cpp b/src/classes/PRunAsymmetry.cpp
index 1a9f3d72..71e3caad 100644
--- a/src/classes/PRunAsymmetry.cpp
+++ b/src/classes/PRunAsymmetry.cpp
@@ -1297,7 +1297,7 @@ Bool_t PRunAsymmetry::PrepareViewData(PRawRunData* runData, UInt_t histoNo[2])
 
   // calculate theory
   Double_t time;
-  UInt_t size = runData->GetDataBin(histoNo[0])->size();
+  UInt_t size = runData->GetDataBin(histoNo[0])->size()/packing;
   Int_t factor = 8; // 8 times more points for the theory (if fTheoAsData == false)
 
   fData.SetTheoryTimeStart(fData.GetDataTimeStart());
diff --git a/src/classes/PRunSingleHisto.cpp b/src/classes/PRunSingleHisto.cpp
index 6aab2152..72c8c17e 100644
--- a/src/classes/PRunSingleHisto.cpp
+++ b/src/classes/PRunSingleHisto.cpp
@@ -1315,7 +1315,7 @@ Bool_t PRunSingleHisto::PrepareViewData(PRawRunData* runData, const UInt_t histo
 
   // calculate theory
   Double_t theoryValue;
-  UInt_t size = fForward.size();
+  UInt_t size = fForward.size()/packing;
   Int_t factor = 8; // 8 times more points for the theory (if fTheoAsData == false)
   UInt_t rebinRRF = 0;