diff --git a/PolyLine.cpp b/PolyLine.cpp
index 4678ce9..9557017 100644
--- a/PolyLine.cpp
+++ b/PolyLine.cpp
@@ -1608,7 +1608,7 @@ AssociatePolyLinesMinDistPoints( const PolyLine& PL1, const PolyLine& PL2, PNTIV
         // distanza del punto dal segmento della polilinea
          DistPointLine PointLineDistCalc( vPnt1[i].first, vPnt2[j-1].first, vPnt2[j].first) ;
          double dPlDist ;         
-         if ( PointLineDistCalc.GetDist( dPlDist) && dPlDist < dDist) {
+         if ( PointLineDistCalc.GetDist( dPlDist)  &&  dPlDist < dDist - EPS_SMALL) {
             dDist = dPlDist ;
             PointLineDistCalc.GetParamAtMinDistPoint( dMinDistPar) ;
             dMinDistPar += j - 1 ;
@@ -1639,8 +1639,7 @@ AssociatePolyLinesMinDistPoints( const PolyLine& PL1, const PolyLine& PL2, PNTIV
         // distanza del punto dal segmento della polilinea
          DistPointLine PointLineDistCalc( vPnt2[j].first, vPnt1[i-1].first, vPnt1[i].first) ;
          double dPlDist ;
-         PointLineDistCalc.GetDist( dPlDist) ;
-         if ( dPlDist < dDist) {
+         if ( PointLineDistCalc.GetDist( dPlDist)  &&  dPlDist < dDist - EPS_SMALL) {
             dDist = dPlDist ;
             PointLineDistCalc.GetParamAtMinDistPoint( dMinDistPar) ;
             dMinDistPar += i - 1 ;