1 files changed, 3 insertions, 2 deletions
diff --git a/src/Persistent_cohomology/example/alpha_complex_3d_persistence.cpp b/src/Persistent_cohomology/example/alpha_complex_3d_persistence.cpp
index 40f4aff9..fd227b82 100644
--- a/src/Persistent_cohomology/example/alpha_complex_3d_persistence.cpp
+++ b/src/Persistent_cohomology/example/alpha_complex_3d_persistence.cpp
@@ -20,12 +20,11 @@
  *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "alpha_complex_3d_helper.h"
+#include <boost/variant.hpp>
 
 #include <gudhi/Simplex_tree.h>
 #include <gudhi/Persistent_cohomology.h>
 #include <gudhi/Points_3D_off_io.h>
-#include <boost/variant.hpp>
 
 #include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
 #include <CGAL/Delaunay_triangulation_3.h>
@@ -41,6 +40,8 @@
 #include <list>
 #include <vector>
 
+#include "alpha_complex_3d_helper.h"
+
 // Alpha_shape_3 templates type definitions
 using Kernel = CGAL::Exact_predicates_inexact_constructions_kernel;
 using Vb = CGAL::Alpha_shape_vertex_base_3<Kernel>;