diff --git a/NPSimulation/Detectors/TACTIC/TACTICScorer.cc b/NPSimulation/Detectors/TACTIC/TACTICScorer.cc
index 0909d3b54633334dc51eaafbe128a0a2ee8872eb..79e20f0d6b44c8f58ccaf013feeef455b254d9f0 100644
--- a/NPSimulation/Detectors/TACTIC/TACTICScorer.cc
+++ b/NPSimulation/Detectors/TACTIC/TACTICScorer.cc
@@ -71,7 +71,7 @@ G4bool Gas_Scorer::ProcessHits(G4Step* aStep, G4TouchableHistory*){
   it= EvtMap->GetMap()->find(m_Index);
   if(it!=EvtMap->GetMap()->end()){
     G4double* dummy = *(it->second);
-    if(Infos[1]==dummy[1]) Infos[4]+=dummy[4]; //accumulate ionisation energy deposit to get total accross pad
+    if(Infos[1]==dummy[1]) Infos[5]+=dummy[5]; //accumulate ionisation energy deposit to get total accross pad
     delete dummy;
   }