diff --git a/include/bounce/dynamics/cloth/particle.h b/include/bounce/dynamics/cloth/particle.h
index 86e60ca..b4e4884 100644
--- a/include/bounce/dynamics/cloth/particle.h
+++ b/include/bounce/dynamics/cloth/particle.h
@@ -64,9 +64,7 @@ class b3FrictionForce : public b3Force
 public:
 	b3FrictionForce() { }
 	~b3FrictionForce() { }
-	
-	void SolvePositionConstraints(const b3ClothSolverData* data);
-	
+
 	void Apply(const b3ClothSolverData* data);
 
 	b3Particle* m_p;
diff --git a/src/bounce/dynamics/cloth/particle.cpp b/src/bounce/dynamics/cloth/particle.cpp
index 7cdea5f..234293e 100644
--- a/src/bounce/dynamics/cloth/particle.cpp
+++ b/src/bounce/dynamics/cloth/particle.cpp
@@ -22,11 +22,6 @@
 #include <bounce/dynamics/cloth/dense_vec3.h>
 #include <bounce/dynamics/cloth/sparse_sym_mat33.h>
 
-void b3FrictionForce::SolvePositionConstraints(const b3ClothSolverData* data)
-{
-	B3_NOT_USED(data);
-}
-
 void b3FrictionForce::Apply(const b3ClothSolverData* data)
 {
 	// TODO