diff --git a/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.C b/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.C
index 1e8c2197..f921dde4 100644
--- a/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.C
+++ b/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.C
@@ -933,12 +933,6 @@ void twoWayOne2One::extractCollected(T*& src, T**& dst, int width) const
     }
 }
 
-int twoWayOne2One::getNumberOfParticles() const
-{
-    return particleCloud_.numberOfParticles();
-}
-
-
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
diff --git a/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.H b/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.H
index 08abc600..e29bb6b4 100644
--- a/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.H
+++ b/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.H
@@ -92,20 +92,20 @@ private:
   // private data
     dictionary        propsDict_;
 
-    mutable MPI_Comm  comm_liggghts_;
+    MPI_Comm  comm_liggghts_;
 
 
     // LIG ranks from which to retrieve particle data
-    mutable labelList thisLigPartner_;
-    mutable labelList thisFoamPartner_;
+    labelList thisLigPartner_;
+    labelList thisFoamPartner_;
 
-    mutable One2One*  lig2foam_;
-    mutable One2One*  foam2lig_;
+    One2One*  lig2foam_;
+    One2One*  foam2lig_;
 
-    mutable bool*     lig2foam_mask_;
+    bool*     lig2foam_mask_;
 
-    mutable int*      lig2foam_ids_;
-    mutable int*      foam2lig_ids_;
+    int*      lig2foam_ids_;
+    int*      foam2lig_ids_;
 
     mutable double*   lig2foam_vec_tmp_;
     mutable double*   lig2foam_scl_tmp_;
@@ -113,9 +113,9 @@ private:
     mutable double*   foam2lig_vec_tmp_;
     mutable double*   foam2lig_scl_tmp_;
 
-    mutable Switch    staticProcMap_;
-    mutable Switch    cellIdComm_;
-    mutable LAMMPS_NS::FixPropertyAtom* my_prev_cell_ids_fix_;
+    Switch    staticProcMap_;
+    Switch    cellIdComm_;
+    LAMMPS_NS::FixPropertyAtom* my_prev_cell_ids_fix_;
 
     treeBoundBox       thisFoamBox_;
 
@@ -220,8 +220,6 @@ public:
 
         int getNumberOfParticles() const;
 
-        word myType() const { return typeName; }
-
         void setCG() { particleCloud_.setCG(lmp->force->cg()); }
 };