diff --git a/src/xrPhysics/dcylinder/dCylinder.cpp b/src/xrPhysics/dcylinder/dCylinder.cpp
index 2b3378d1840..7b34d6dd1da 100644
--- a/src/xrPhysics/dcylinder/dCylinder.cpp
+++ b/src/xrPhysics/dcylinder/dCylinder.cpp
@@ -1,4 +1,5 @@
 #include "stdafx.h"
+#include "tri-colliderknoopc/dTriColliderCommon.h"
 #include "dCylinder.h"
 #include "xrPhysics/ode_include.h"
 
@@ -17,8 +18,6 @@ int dCylinderClassUser = -1;
 
 #define NUMC_MASK (0xffff)
 
-#define CONTACT(p, skip) ((dContactGeom*)(((char*)p) + (skip)))
-
 /////////////////////////////////////////////////////////////////////////////////////////////////
 /////////////////////////////circleIntersection//////////////////////////////////////////////////
 // this does following: