diff --git a/EGkDistPointCurve.h b/EGkDistPointCurve.h
index a41b50a..3d7deef 100644
--- a/EGkDistPointCurve.h
+++ b/EGkDistPointCurve.h
@@ -63,8 +63,8 @@ class DistPointCurve
       EGK_EXPORT bool GetMinDistPoint( double dNearParam, Point3d& ptMinDist, int& nFlag) const ;
       EGK_EXPORT bool GetParamAtMinDistPoint( int nInd, double& dParam, int& nFlag) const ;
       EGK_EXPORT bool GetParamAtMinDistPoint( double dNearParam, double& dParam, int& nFlag) const ;
-      EGK_EXPORT bool GetSideAtMinDistPoint( int nInd, const Vector3d& vtN, int& nSide) const ;
-      EGK_EXPORT bool GetSideAtMinDistPoint( double dNearParam, const Vector3d& vtN, int& nSide) const ;
+      EGK_EXPORT bool GetSideAtMinDistPoint( int nInd, const Vector3d& vtN, int& nSide, double dTol = EPS_SMALL) const ;
+      EGK_EXPORT bool GetSideAtMinDistPoint( double dNearParam, const Vector3d& vtN, int& nSide, double dTol = EPS_SMALL) const ;
       EGK_EXPORT bool GetMinDistInfo( int nInd, MinDistPCInfo& aInfo) const ;
 
    private :