diff --git a/SMDS_3/include/CGAL/SMDS_3/tet_soup_to_c3t3.h b/SMDS_3/include/CGAL/SMDS_3/tet_soup_to_c3t3.h
index 812bc87214c..ae6c070bec5 100644
--- a/SMDS_3/include/CGAL/SMDS_3/tet_soup_to_c3t3.h
+++ b/SMDS_3/include/CGAL/SMDS_3/tet_soup_to_c3t3.h
@@ -576,7 +576,7 @@ bool build_triangulation_from_file(std::istream& is,
       is >> nv;
       for(int i=0; i<nv; ++i)
       {
-        double x,y,z;
+        typename Tr::Geom_traits::FT x,y,z;
         is >> x >> y >> z >> ref;
         points.push_back(Point_3(x,y,z));
       }