diff --git a/Common/DefaultOptions.h b/Common/DefaultOptions.h
index d2b93c38df2722099db4b0774efb5e4b40a59f73..dc2bf1212b93a2820f516d7c8a10083b6d9d7667 100644
--- a/Common/DefaultOptions.h
+++ b/Common/DefaultOptions.h
@@ -853,7 +853,12 @@ StringXNumber GeometryOptions_Number[] = {
 StringXNumber MeshOptions_Number[] = {
   { F|O, "Algorithm" , opt_mesh_algo2d , ALGO_2D_MESHADAPT ,
     "2D mesh algorithm (1=meshadapt, 2=delaunay)" }, 
-  { F|O, "Algorithm3D" , opt_mesh_algo3d , ALGO_3D_NETGEN ,
+  { F|O, "Algorithm3D" , opt_mesh_algo3d , 
+#if defined(HAVE_TETGEN)
+    ALGO_3D_DELAUNAY ,
+#else
+    ALGO_3D_NETGEN ,
+#endif
     "3D mesh algorithm (1=delaunay, 4=netgen, 5=tetgen)" }, 
   { F|O, "AngleSmoothNormals" , opt_mesh_angle_smooth_normals , 30.0 ,
     "Threshold angle below which normals are not smoothed" }, 
diff --git a/doc/VERSIONS b/doc/VERSIONS
index dc4ad8478a369cc504ffe69e036f5f9954dd1098..8a2a3075b8c71a810c7495e2e2dc9a61d93135ae 100644
--- a/doc/VERSIONS
+++ b/doc/VERSIONS
@@ -1,7 +1,8 @@
-$Id: VERSIONS,v 1.376 2007-02-13 07:51:48 geuzaine Exp $
+$Id: VERSIONS,v 1.377 2007-02-14 12:31:15 geuzaine Exp $
 
-since 2.0: volumes can now be defined from external CAD surfaces;
-fixed various small bugs.
+since 2.0: volumes can now be defined from external CAD surfaces; use
+Delaunay/Tetgen algorithm by default when available; fixed various
+small bugs.
 
 2.0 (February 5, 2007): new geometry and mesh databases, with support
 for STEP and IGES import via OpenCascade; complete rewrite of geometry