diff --git a/src/classes/PRunAsymmetry.cpp b/src/classes/PRunAsymmetry.cpp
index c121a55d..ade82862 100644
--- a/src/classes/PRunAsymmetry.cpp
+++ b/src/classes/PRunAsymmetry.cpp
@@ -366,7 +366,7 @@ bool PRunAsymmetry::PrepareData()
       // get T0's of the to be added run
       int t0Add[2] = {0, 0};
       // check if the t0's are given in the msr-file
-      if (i >= fRunInfo->fT0.size()) { // t0's are NOT in the msr-file
+      if (2*i+1 >= fRunInfo->fT0.size()) { // t0's are NOT in the msr-file
         // check if the t0's are in the data file
         if (addRunData->GetT0s().size() != 0) { // t0's in the run data
           // keep the proper t0's. For asymmetry runs, forward/backward are holding the histo no
diff --git a/src/classes/PRunDataHandler.cpp b/src/classes/PRunDataHandler.cpp
index 166a962c..b95e46e9 100644
--- a/src/classes/PRunDataHandler.cpp
+++ b/src/classes/PRunDataHandler.cpp
@@ -949,7 +949,7 @@ Bool_t PRunDataHandler::ReadPsiBinFile()
     for (Int_t j=0; j<psiBin.get_histoLength_bin(); j++) {
       histoData.push_back(histo[j]);
     }
-    delete histo;
+    delete[] histo;
     runData.AppendDataBin(histoData);
     histoData.clear();
   }