diff --git a/src/iguana/algorithms/physics/InclusiveKinematics/Algorithm.cc b/src/iguana/algorithms/physics/InclusiveKinematics/Algorithm.cc
index 5851a857..06ab4781 100644
--- a/src/iguana/algorithms/physics/InclusiveKinematics/Algorithm.cc
+++ b/src/iguana/algorithms/physics/InclusiveKinematics/Algorithm.cc
@@ -101,9 +101,10 @@ namespace iguana::physics {
         particle_bank.getFloat("py", lepton_pindex),
         particle_bank.getFloat("pz", lepton_pindex),
         key);
+    result_vars.pindex = lepton_pindex; // FIXME: should be done in `ComputeFromLepton`, but need a proper action function first...
 
     result_bank.setRows(1);
-    result_bank.putShort(i_pindex, 0, static_cast<int16_t>(lepton_pindex));
+    result_bank.putShort(i_pindex, 0, static_cast<int16_t>(result_vars.pindex));
     result_bank.putDouble(i_Q2, 0, result_vars.Q2);
     result_bank.putDouble(i_x, 0, result_vars.x);
     result_bank.putDouble(i_y, 0, result_vars.y);
diff --git a/src/iguana/algorithms/physics/InclusiveKinematics/Algorithm.h b/src/iguana/algorithms/physics/InclusiveKinematics/Algorithm.h
index d91a52ac..c60c3e91 100644
--- a/src/iguana/algorithms/physics/InclusiveKinematics/Algorithm.h
+++ b/src/iguana/algorithms/physics/InclusiveKinematics/Algorithm.h
@@ -9,6 +9,8 @@ namespace iguana::physics {
 
   /// Set of inclusive kinematics variables
   struct InclusiveKinematicsVars {
+      /// @brief `REC::Particle` row (`pindex`) of the scattered electron
+      int pindex;
       /// @brief @latex{x}-component of virtual photon momentum @latex{q}
       vector_element_t qx;
       /// @brief @latex{y}-component of virtual photon momentum @latex{q}