diff --git a/src/BulletCollision/Gimpact/gim_basic_geometry_operations.h b/src/BulletCollision/Gimpact/gim_basic_geometry_operations.h
index 915277404..d98051da3 100644
--- a/src/BulletCollision/Gimpact/gim_basic_geometry_operations.h
+++ b/src/BulletCollision/Gimpact/gim_basic_geometry_operations.h
@@ -404,12 +404,12 @@ SIMD_FORCE_INLINE void SEGMENT_COLLISION(
 	CLASS_POINT & vPointA,
 	CLASS_POINT & vPointB)
 {
-    CLASS_POINT _AD,_BD,_N;
+    CLASS_POINT _AD,_BD,n;
     vec4f _M;//plane
     VEC_DIFF(_AD,vA2,vA1);
     VEC_DIFF(_BD,vB2,vB1);
-    VEC_CROSS(_N,_AD,_BD);
-    GREAL _tp = VEC_DOT(_N,_N);
+    VEC_CROSS(n,_AD,_BD);
+    GREAL _tp = VEC_DOT(n,n);
     if(_tp<G_EPSILON)//ARE PARALELE
     {
     	//project B over A
@@ -424,10 +424,10 @@ SIMD_FORCE_INLINE void SEGMENT_COLLISION(
     	_M[2] = VEC_DOT(vA1,_AD);
     	_M[3] = VEC_DOT(vA2,_AD);
     	//mid points
-    	_N[0] = (_M[0]+_M[1])*0.5f;
-    	_N[1] = (_M[2]+_M[3])*0.5f;
+    	n[0] = (_M[0]+_M[1])*0.5f;
+    	n[1] = (_M[2]+_M[3])*0.5f;
 
-    	if(_N[0]<_N[1])
+    	if(n[0]<n[1])
     	{
     		if(_M[1]<_M[2])
     		{
@@ -467,7 +467,7 @@ SIMD_FORCE_INLINE void SEGMENT_COLLISION(
     }
 
 
-    VEC_CROSS(_M,_N,_BD);
+    VEC_CROSS(_M,n,_BD);
     _M[3] = VEC_DOT(_M,vB1);
 
     LINE_PLANE_COLLISION(_M,_AD,vA1,vPointA,_tp,btScalar(0), btScalar(1));
diff --git a/src/BulletDynamics/MLCPSolvers/btDantzigLCP.cpp b/src/BulletDynamics/MLCPSolvers/btDantzigLCP.cpp
index c2634dff5..986f21487 100644
--- a/src/BulletDynamics/MLCPSolvers/btDantzigLCP.cpp
+++ b/src/BulletDynamics/MLCPSolvers/btDantzigLCP.cpp
@@ -1200,9 +1200,9 @@ struct btLCP
 	int *const m_findex, *const m_p, *const m_C;
 
 	btLCP (int _n, int _nskip, int _nub, btScalar *_Adata, btScalar *_x, btScalar *_b, btScalar *_w,
-		btScalar *_lo, btScalar *_hi, btScalar *_L, btScalar *_d,
+		btScalar *_lo, btScalar *_hi, btScalar *l, btScalar *_d,
 		btScalar *_Dell, btScalar *_ell, btScalar *_tmp,
-		bool *_state, int *_findex, int *_p, int *_C, btScalar **Arows);
+		bool *_state, int *_findex, int *p, int *c, btScalar **Arows);
 	int getNub() const { return m_nub; }
 	void transfer_i_to_C (int i);
 	void transfer_i_to_N (int i) { m_nN++; }			// because we can assume C and N span 1:i-1
@@ -1225,9 +1225,9 @@ struct btLCP
 
 
 btLCP::btLCP (int _n, int _nskip, int _nub, btScalar *_Adata, btScalar *_x, btScalar *_b, btScalar *_w,
-            btScalar *_lo, btScalar *_hi, btScalar *_L, btScalar *_d,
+            btScalar *_lo, btScalar *_hi, btScalar *l, btScalar *_d,
             btScalar *_Dell, btScalar *_ell, btScalar *_tmp,
-            bool *_state, int *_findex, int *_p, int *_C, btScalar **Arows):
+            bool *_state, int *_findex, int *p, int *c, btScalar **Arows):
   m_n(_n), m_nskip(_nskip), m_nub(_nub), m_nC(0), m_nN(0),
 # ifdef BTROWPTRS
   m_A(Arows),
@@ -1235,8 +1235,8 @@ btLCP::btLCP (int _n, int _nskip, int _nub, btScalar *_Adata, btScalar *_x, btSc
   m_A(_Adata),
 #endif
   m_x(_x), m_b(_b), m_w(_w), m_lo(_lo), m_hi(_hi),
-  m_L(_L), m_d(_d), m_Dell(_Dell), m_ell(_ell), m_tmp(_tmp),
-  m_state(_state), m_findex(_findex), m_p(_p), m_C(_C)
+  m_L(l), m_d(_d), m_Dell(_Dell), m_ell(_ell), m_tmp(_tmp),
+  m_state(_state), m_findex(_findex), m_p(p), m_C(c)
 {
   {
     btSetZero (m_x,m_n);