diff --git a/CGAL_ipelets/demo/CGAL_ipelets/alpha_shapes.cpp b/CGAL_ipelets/demo/CGAL_ipelets/alpha_shapes.cpp
index 102ba1ded0d..62a35e224da 100644
--- a/CGAL_ipelets/demo/CGAL_ipelets/alpha_shapes.cpp
+++ b/CGAL_ipelets/demo/CGAL_ipelets/alpha_shapes.cpp
@@ -74,7 +74,7 @@ void ASphapeIpelet::protected_run(int fn)
   
   
   
-  Iso_rectangle_2 bbox=read_active_objects(
+  read_active_objects(
     CGAL::dispatch_or_drop_output<Point_2,Circle_2>(std::back_inserter(pt_list),
                                                     std::back_inserter(cir_list))
   );
diff --git a/CGAL_ipelets/demo/CGAL_ipelets/multi_delaunay.cpp b/CGAL_ipelets/demo/CGAL_ipelets/multi_delaunay.cpp
index 1d5d717a42f..9822447f593 100644
--- a/CGAL_ipelets/demo/CGAL_ipelets/multi_delaunay.cpp
+++ b/CGAL_ipelets/demo/CGAL_ipelets/multi_delaunay.cpp
@@ -119,7 +119,6 @@ void MdelaunayIpelet::protected_run(int fn)
         //WE MAY COUNT SEVERAL TIME SAME TRIANGLE WITH THE FOLLOWING METHOD
         //iterate over adjacent point in the regular triangulation and compute a new wpoint for those having one commun parent from delaunay
         for (RegularI::Finite_edges_iterator it=rti.finite_edges_begin();it!=rti.finite_edges_end();++it){
-          VertexI ff=it->first->vertex(Delaunay::cw(it->second));
           Point_2 pt0_ori0=it->first->vertex(Delaunay::cw(it->second))->info().front();
           Point_2 pt0_ori1=it->first->vertex(Delaunay::cw(it->second))->info().back();
           Point_2 pt1_ori0=it->first->vertex(Delaunay::ccw(it->second))->info().front();
diff --git a/CGAL_ipelets/demo/CGAL_ipelets/partition.cpp b/CGAL_ipelets/demo/CGAL_ipelets/partition.cpp
index 91dfe327d8b..35cf5e7218a 100644
--- a/CGAL_ipelets/demo/CGAL_ipelets/partition.cpp
+++ b/CGAL_ipelets/demo/CGAL_ipelets/partition.cpp
@@ -56,8 +56,7 @@ void ConvexpartitionIpelet::protected_run(int fn)
   }
 
   std::list<Polygon_2> pol_list;
-  Iso_rectangle_2 bbox=
-    read_active_objects( CGAL::dispatch_or_drop_output<Polygon_2>( std::back_inserter(pol_list) ) );
+  read_active_objects( CGAL::dispatch_or_drop_output<Polygon_2>( std::back_inserter(pol_list) ) );
 
   
   
diff --git a/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h b/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h
index a6768ade4f2..005fc250fb3 100644
--- a/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h
+++ b/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h
@@ -496,7 +496,7 @@ public:
       typedef  typename std::multimap<double,std::pair<Type_circ_arc,const Point_2*> >::iterator Map_theta_iterator;
       Map_theta_iterator s_it=map_theta.insert(
                                 std::make_pair(get_theta(*source,circle),std::make_pair(OSRC,source)));
-      Map_theta_iterator t_it=map_theta.insert(
+      /*Map_theta_iterator t_it=*/map_theta.insert(
                                 std::make_pair(get_theta(*target,circle),std::make_pair(OTRG,target)));
       
       for (typename std::vector<Circular_arc_2>::iterator it_arc=arc_list.begin();it_arc!=arc_list.end();++it_arc){