diff --git a/packages/cgal.cmake b/packages/cgal.cmake
index 1815b372e..eef6a0545 100644
--- a/packages/cgal.cmake
+++ b/packages/cgal.cmake
@@ -1,75 +1,83 @@
 #===============================================================================
 # @file   cgal.cmake
 #
 # @author Lucas Frerot <lucas.frerot@epfl.ch>
 # @author Clement Roux <clement.roux@epfl.ch>
 #
 # @date creation: Thu Feb 19 2015
 # @date last modification: Wed Jan 20 2016
 #
 # @brief  package description for CGAL
 #
 # @section LICENSE
 #
 # Copyright (©) 2015 EPFL (Ecole Polytechnique Fédérale de Lausanne) Laboratory
 # (LSMS - Laboratoire de Simulation en Mécanique des Solides)
 #
 # Akantu is free  software: you can redistribute it and/or  modify it under the
 # terms  of the  GNU Lesser  General Public  License as  published by  the Free
 # Software Foundation, either version 3 of the License, or (at your option) any
 # later version.
 #
 # Akantu is  distributed in the  hope that it  will be useful, but  WITHOUT ANY
 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 # A  PARTICULAR PURPOSE. See  the GNU  Lesser General  Public License  for more
 # details.
 #
 # You should  have received  a copy  of the GNU  Lesser General  Public License
 # along with Akantu. If not, see <http://www.gnu.org/licenses/>.
 #
 #===============================================================================
-
 package_declare(CGAL EXTERNAL
   DESCRIPTION "Add CGAL support in akantu"
   COMPILE_FLAGS CXX -frounding-math
   BOOST_COMPONENTS system thread
   )
 
+package_is_activated(CGAL _is_activated)
+
+if (_is_activated AND (CMAKE_BUILD_TYPE MATCHES "[Dd][Ee][Bb][Uu][Gg]"))
+  set(CGAL_DISABLE_ROUNDING_MATH_CHECK ON
+    CACHE INTERNAL
+    "Disable rounding math check in CGAL. This permits Valgrind to run." FORCE)
+endif()
+
+
 package_declare_sources(CGAL
   geometry/mesh_geom_common.hh
 
   geometry/mesh_geom_abstract.hh
 
   geometry/mesh_geom_factory.hh
   geometry/mesh_geom_factory_tmpl.hh
 
   geometry/mesh_abstract_intersector.hh
   geometry/mesh_abstract_intersector_tmpl.hh
 
   geometry/mesh_geom_intersector.hh
   geometry/mesh_geom_intersector_tmpl.hh
 
   geometry/mesh_segment_intersector.hh
   geometry/mesh_segment_intersector_tmpl.hh
 
   geometry/mesh_sphere_intersector.hh
   geometry/mesh_sphere_intersector_tmpl.hh
 
   geometry/tree_type_helper.hh
   geometry/geom_helper_functions.hh
 
   geometry/aabb_primitives/triangle.hh
   geometry/aabb_primitives/line_arc.hh
   geometry/aabb_primitives/tetrahedron.hh
 
   geometry/aabb_primitives/aabb_primitive.hh
   geometry/aabb_primitives/aabb_primitive.cc
   )
 
 package_declare_documentation(CGAL
   "This package allows the use of CGAL's geometry algorithms in Akantu. Note that it needs a version of CGAL $\\geq$ 4.5 and needs activation of boost's system component."
   ""
   "CGAL checks with an assertion that the compilation flag \\shellcode{-frounding-math} is activated, which forbids the use of Valgrind on any code compilated with the package."
   )
 
 package_set_package_system_dependency(CGAL deb-src "libcgal-dev >= 4.5")