diff --git a/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.H b/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.H
index 83a6f535..b68c8524 100644
--- a/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.H
+++ b/src/lagrangian/cfdemParticle/subModels/dataExchangeModel/twoWayOne2One/twoWayOne2One.H
@@ -218,8 +218,6 @@ public:
         template <typename T>
         void extractCollected(T*&, T**&, int width=1) const;
 
-        int getNumberOfParticles() const;
-
         void setCG() { particleCloud_.setCG(lmp->force->cg()); }
 };