diff --git a/Nef_S2/doc/Nef_S2/PackageDescription.txt b/Nef_S2/doc/Nef_S2/PackageDescription.txt
index c0b47e163b4..647e0bbe833 100644
--- a/Nef_S2/doc/Nef_S2/PackageDescription.txt
+++ b/Nef_S2/doc/Nef_S2/PackageDescription.txt
@@ -6,10 +6,10 @@
 /*!
 \addtogroup PkgNefS2
 \todo check generated documentation
-\PkgDescriptionBegin{2D Boolean Operations on Nef Polygons Embedded on the Sphere }
+\PkgDescriptionBegin{2D Boolean Operations on Nef Polygons Embedded on the Sphere}
 \PkgPicture{Nef_S2-teaser-small.png}
 \PkgAuthor{Peter Hachenberger  and Lutz Kettner}
-\PkgDesc{This package offers the equivalent to 2D Nef Polygons in the plane.  Here halfplanes correspond to half spheres delimited by great circles. }
+\PkgDesc{This package offers the equivalent to 2D Nef Polygons in the plane. Here halfplanes correspond to half spheres delimited by great circles.}
 \PkgSince{3.1}
 \cgalbib{ cgal:hk-bonpes2-12 }
 \license{ \ref licensesGPL  "GPL"}