diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index c9fb331..50dcb01 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ
diff --git a/SurfFlatRegionOffset.cpp b/SurfFlatRegionOffset.cpp
index be335b2..18fb77c 100644
--- a/SurfFlatRegionOffset.cpp
+++ b/SurfFlatRegionOffset.cpp
@@ -27,6 +27,9 @@ SurfFlatRegion::Offset( double dDist, int nType)
    int nChunk = GetChunkCount() ;
    if ( nChunk == 0)
       return false ;
+  // se offset nullo, non devo fare alcunché
+   if ( abs( dDist) < 10 * EPS_SMALL)
+      return true ;
   // creo una nuova regione
    PtrOwner<SurfFlatRegion> pSfr( new( nothrow) SurfFlatRegion) ;
    if ( IsNull( pSfr))