diff --git a/include/eigenpy/numpy.hpp b/include/eigenpy/numpy.hpp
index c9cea4ed65543b16f0eff2ed6202af88e2fc9197..c8780a2c4e7beb2c4627a633bc802d408a23404f 100644
--- a/include/eigenpy/numpy.hpp
+++ b/include/eigenpy/numpy.hpp
@@ -5,6 +5,7 @@
 #ifndef __eigenpy_numpy_hpp__
 #define __eigenpy_numpy_hpp__
 
+#include <boost/python.hpp>
 #include "eigenpy/config.hpp"
 
 #ifndef PY_ARRAY_UNIQUE_SYMBOL