diff --git a/Surface_mesher/demo/Surface_mesher/debug_macros.h b/Surface_mesher/demo/Surface_mesher/debug_macros.h
index 7f6215f1711..b51685f0583 100644
--- a/Surface_mesher/demo/Surface_mesher/debug_macros.h
+++ b/Surface_mesher/demo/Surface_mesher/debug_macros.h
@@ -6,8 +6,12 @@
 // #define CGAL_MESHES_DEBUG_REFINEMENT_POINTS
 // #define CGAL_DEBUG_OCTREE_CONSTRUCTION
 
-#define CGAL_MESHES_NO_OUTPUT
+// #define CGAL_MESHES_NO_OUTPUT
+
+#define CGAL_SURFACE_MESHER_DEBUG_INITIAL_POINTS
+
 
 // not debugging macros
 // #define CGAL_C2T3_USE_POLYHEDRON
 #define CGAL_C2T3_USE_FILE_WRITER_OFF
+
diff --git a/Surface_mesher/demo/Surface_mesher/implicit_surface_mesher.cpp b/Surface_mesher/demo/Surface_mesher/implicit_surface_mesher.cpp
index b9ef903ba0f..9db0f864a27 100644
--- a/Surface_mesher/demo/Surface_mesher/implicit_surface_mesher.cpp
+++ b/Surface_mesher/demo/Surface_mesher/implicit_surface_mesher.cpp
@@ -1,3 +1,4 @@
+#include "debug_macros.h"
 #include <CGAL/Surface_mesh_default_triangulation_3.h>
 #include <CGAL/Complex_2_in_triangulation_3.h>
 #include <CGAL/make_surface_mesh.h>