diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index d6ed715..8df6dd1 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ
diff --git a/IntersTriaTria.cpp b/IntersTriaTria.cpp
index 835a296..793429c 100644
--- a/IntersTriaTria.cpp
+++ b/IntersTriaTria.cpp
@@ -87,7 +87,7 @@ IntersTriaTria( const Triangle3d& trTria1, const Triangle3d& trTria2, Point3d& p
   // se i triangoli sono complanari
    if ( nResPP == IPPT_OVERLAPS  ||
         ((( nVertPos1 == 0  &&  nVertNeg1 == 0)  ||  ( nVertPos2 == 0  &&  nVertNeg2 == 0)) &&
-         ( trTria1.GetN() ^ trTria2.GetN()).SqLen() < SIN_EPS_ANG_SMALL * SIN_EPS_ANG_SMALL))
+         ( trTria1.GetN() ^ trTria2.GetN()).SqLen() < 25 * SIN_EPS_ANG_SMALL * SIN_EPS_ANG_SMALL))
       return IntersCoplanarTriaTria( trTria1, trTria2, vTria) ;
 
   // limito la linea di intersezione con il primo triangolo