diff --git a/Three/doc/Three/Three.txt b/Three/doc/Three/Three.txt
index 74867297acf..a3ff0ce1a91 100644
--- a/Three/doc/Three/Three.txt
+++ b/Three/doc/Three/Three.txt
@@ -334,6 +334,7 @@ You will probably have to fetch the libraries exported by the Polyhedron_demo, l
     HINTS "${CGAL_DIR}" "${CGAL_DIR}/Polyhedron/demo/Polyhedron-build"
     )
     include( ${CGAL_POLYHEDRON_DEMO_USE_FILE} )
+
 Be careful, the polyhedron_demo build directory must contain a build of the demo that comes from the same CGAL version than the one of your CGAL_DIR.
 Finally, you can declare your plugin