diff --git a/tdcgal/cgal.hpp b/tdcgal/cgal.hpp
index 695f75b..89cd369 100644
--- a/tdcgal/cgal.hpp
+++ b/tdcgal/cgal.hpp
@@ -1,6 +1,10 @@
-#include <pybind11/pybind11.h>
+#ifndef CGAL_BINDINGS_H
+#define CGAL_BINDINGS_H
 
+#include <pybind11/pybind11.h>
 
 namespace py = pybind11;
 
 void init_plane(py::module_ &);
+
+#endif // CGAL_BINDINGS_H
\ No newline at end of file