diff --git a/modules/mol/alg/pymod/wrap_mol_alg.cc b/modules/mol/alg/pymod/wrap_mol_alg.cc
index 51a8284045df4cc1ee0ef674dca287fe67b0df36..ac7471758bd2ab4a88230d9d7a2aa7a20324563f 100644
--- a/modules/mol/alg/pymod/wrap_mol_alg.cc
+++ b/modules/mol/alg/pymod/wrap_mol_alg.cc
@@ -18,6 +18,7 @@
 //------------------------------------------------------------------------------
 
 #include <boost/python.hpp>
+#include <boost/python/raw_function.hpp>
 #include <boost/python/suite/indexing/map_indexing_suite.hpp>
 #include <ost/config.hh>
 #include <ost/mol/alg/local_dist_diff_test.hh>