diff --git a/include/boost/python/suite/indexing/algo_selector.hpp b/include/boost/python/suite/indexing/algo_selector.hpp
index 822bb02c..e12738e2 100755
--- a/include/boost/python/suite/indexing/algo_selector.hpp
+++ b/include/boost/python/suite/indexing/algo_selector.hpp
@@ -21,6 +21,7 @@
 #ifndef BOOST_PYTHON_INDEXING_ALGO_SELECTOR_HPP
 #define BOOST_PYTHON_INDEXING_ALGO_SELECTOR_HPP
 
+#include <boost/config.hpp>
 #include <boost/detail/workaround.hpp>
 
 namespace boost { namespace python { namespace indexing {