diff --git a/analysis/modules/SusyModule.cc b/analysis/modules/SusyModule.cc
index 0b92929..a50752a 100644
--- a/analysis/modules/SusyModule.cc
+++ b/analysis/modules/SusyModule.cc
@@ -1134,8 +1134,8 @@ SusyModule::bTagSF(CandList& jets ,
   for(unsigned int i=0;i<jets.size(); ++i) {
     bool find=false;
     unsigned int  flavor = 2;
-    if(_vc->get( (string)(jetIdx[i].first+"_mcFlavour") , jetIdx[i].second) == 5) flavor = 0; // b jet
-    else if(_vc->get( (string)(jetIdx[i].first+"_mcFlavour") , jetIdx[i].second) == 4) flavor = 1; // c jet
+    if(std::abs(_vc->get( (string)(jetIdx[i].first+"_mcFlavour") , jetIdx[i].second)) == 5) flavor = 0; // b jet
+    else if(std::abs(_vc->get( (string)(jetIdx[i].first+"_mcFlavour") , jetIdx[i].second) == 4)) flavor = 1; // c jet
     
     for(unsigned int iv=0;iv<bJets.size();iv++) {
       if(jetIdx[i].first==bJetIdx[iv].first && jetIdx[i].second==bJetIdx[iv].second) { find=true; break;}