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-rw-r--r--src/Simplex_tree/example/example_alpha_shapes_3_simplex_tree_from_off_file.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/Simplex_tree/example/example_alpha_shapes_3_simplex_tree_from_off_file.cpp b/src/Simplex_tree/example/example_alpha_shapes_3_simplex_tree_from_off_file.cpp
index ff2eebcb..d8289ba9 100644
--- a/src/Simplex_tree/example/example_alpha_shapes_3_simplex_tree_from_off_file.cpp
+++ b/src/Simplex_tree/example/example_alpha_shapes_3_simplex_tree_from_off_file.cpp
@@ -28,6 +28,8 @@
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Delaunay_triangulation_3.h>
#include <CGAL/Alpha_shape_3.h>
+#include <CGAL/Alpha_shape_vertex_base_3.h>
+#include <CGAL/Alpha_shape_cell_base_3.h>
#include <CGAL/iterator.h>
#include <fstream>