diff --git a/Arrangement_on_surface_2/include/CGAL/Sweep_line_2/Sweep_line_2_impl.h b/Arrangement_on_surface_2/include/CGAL/Sweep_line_2/Sweep_line_2_impl.h
index 7130314c6c0..d6233521379 100644
--- a/Arrangement_on_surface_2/include/CGAL/Sweep_line_2/Sweep_line_2_impl.h
+++ b/Arrangement_on_surface_2/include/CGAL/Sweep_line_2/Sweep_line_2_impl.h
@@ -260,6 +260,7 @@ void Sweep_line_2<Tr, Vis, Subcv, Evnt, Alloc>::_handle_right_curves ()
         (static_cast<Subcurve*>(*currentOne),
          static_cast<Subcurve*>(*prevOne)))
     {
+      this->m_currentEvent->set_intersection();
       _intersect(*prevOne, *currentOne);
     }
 
diff --git a/Nef_3/include/CGAL/OFF_to_nef_3.h b/Nef_3/include/CGAL/OFF_to_nef_3.h
index 14a2cf4c174..fdbab0a199a 100644
--- a/Nef_3/include/CGAL/OFF_to_nef_3.h
+++ b/Nef_3/include/CGAL/OFF_to_nef_3.h
@@ -129,7 +129,7 @@ OFF_to_nef_3 (std::istream &i_st, Nef_3 &nef_union, bool verb=false)
 
    // declarations and defaults
    std::size_t discarded_facets=0;
-   long idx;
+   std::size_t idx;
 
 #ifdef CGAL_NEF_OFF_TO_NEF_TIMER
    CGAL::Timer t_convert, t_union;