diff --git a/Analysis/Tasks/PWGLF/NucleiSpectraTask.cxx b/Analysis/Tasks/PWGLF/NucleiSpectraTask.cxx
index 89c162cebde29..c95d2d798d03f 100644
--- a/Analysis/Tasks/PWGLF/NucleiSpectraTask.cxx
+++ b/Analysis/Tasks/PWGLF/NucleiSpectraTask.cxx
@@ -53,7 +53,7 @@ struct NucleiSpecraTask {
         continue;
       }
 
-      hTPCsignal->Fill(track.p(), track.tpcSignal());
+      hTPCsignal->Fill(track.tpcInnerParam(), track.tpcSignal());
       hMomentum->Fill(track.p());
     }
   }