diff --git a/ChangeLog b/ChangeLog
index 2779193d..7d19ff69 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,7 @@ changes since 0.14.0
 ===================================
 NEW 2015-02-23 implemented an average-per-data-set option for musrFT.
 NEW 2015-02-21 add proper Mac icon to musredit 
+FIXED 2015-09-08 fixed error in view_packing for single histo (wrong norm of the theory).
 FIXED 2015-09-04 minor change in Fourier-block output (PMsrHandler::WriteMsrLogFile
                  and PMsrHandler::WriteMsrLogFile) to avoid truncated range labels.
 FIXED 2015-06-30 changed setf/unsetf bug (PMsr2Data.cpp)
diff --git a/src/classes/PRunSingleHisto.cpp b/src/classes/PRunSingleHisto.cpp
index 66f46131..7d8d14ee 100644
--- a/src/classes/PRunSingleHisto.cpp
+++ b/src/classes/PRunSingleHisto.cpp
@@ -861,7 +861,7 @@ Bool_t PRunSingleHisto::PrepareRawViewData(PRawRunData* runData, const UInt_t hi
   if (fScaleN0AndBkg) {
     dataNorm = 1.0/ (packing * (fTimeResolution * 1.0e3)); // fTimeResolution us->ns
   } else if (!fScaleN0AndBkg && (fMsrInfo->GetMsrPlotList()->at(0).fViewPacking > 0)) {
-    theoryNorm = (Double_t)fMsrInfo->GetMsrPlotList()->at(0).fViewPacking/(Double_t)packing;
+    theoryNorm = (Double_t)fMsrInfo->GetMsrPlotList()->at(0).fViewPacking/(Double_t)fPacking;
   }
 
   // raw data, since PMusrCanvas is doing ranging etc.
@@ -1052,7 +1052,7 @@ Bool_t PRunSingleHisto::PrepareViewData(PRawRunData* runData, const UInt_t histo
   if (fScaleN0AndBkg) {
     dataNorm = 1.0/ (packing * (fTimeResolution * 1.0e3)); // fTimeResolution us->ns
   } else if (!fScaleN0AndBkg && (fMsrInfo->GetMsrPlotList()->at(0).fViewPacking > 0)) {
-    theoryNorm = (Double_t)fMsrInfo->GetMsrPlotList()->at(0).fViewPacking/(Double_t)packing;
+    theoryNorm = (Double_t)fMsrInfo->GetMsrPlotList()->at(0).fViewPacking/(Double_t)fPacking;
   }
 
   // transform raw histo data. This is done the following way (for details see the manual):