diff --git a/include/eigenpy/map.hpp b/include/eigenpy/map.hpp
index b8c218035ed02562b2fe2854111aca092c534f33..db5ffc89ffb85376d8df9b9a72d68416b211131a 100644
--- a/include/eigenpy/map.hpp
+++ b/include/eigenpy/map.hpp
@@ -3,6 +3,9 @@
  * Copyright 2018-2020, INRIA
  */
 
+#ifndef __eigenpy_map_hpp__
+#define __eigenpy_map_hpp__
+
 #include "eigenpy/fwd.hpp"
 #include <numpy/arrayobject.h>
 #include "eigenpy/exception.hpp"
@@ -126,3 +129,5 @@ namespace eigenpy
   }
 
 } // namespace eigenpy
+
+#endif // define __eigenpy_map_hpp__