diff --git a/benchmarks/dvmp/analysis/dvmp.h b/benchmarks/dvmp/analysis/dvmp.h
index 140349de2084ab9987e221da08f0d69ecff5dd10..94a4d810c8257b059800b6aeb6131b07ec3d2ed1 100644
--- a/benchmarks/dvmp/analysis/dvmp.h
+++ b/benchmarks/dvmp/analysis/dvmp.h
@@ -106,6 +106,7 @@ namespace util {
         
       }
     }
+    if(first == -1) cout<<"jpsi not RCed"<<endl;
     if(first !=  -1){
       momenta[5].SetPxPyPzE(parts[first].p.x,  parts[first].p.y,  parts[first].p.z,  parts[first].energy);
       momenta[6].SetPxPyPzE(parts[second].p.x, parts[second].p.y, parts[second].p.z, parts[second].energy);