diff --git a/include/boost/python/suite/indexing/visitor.hpp b/include/boost/python/suite/indexing/visitor.hpp
index 1912655a..ee702974 100755
--- a/include/boost/python/suite/indexing/visitor.hpp
+++ b/include/boost/python/suite/indexing/visitor.hpp
@@ -436,7 +436,7 @@ namespace boost { namespace python { namespace indexing {
         Policy const &policy)
     {
       pyClass.def ("count", Algorithms::count, policy);
-      pyClass.def ("contains", Algorithms::contains, policy);
+      pyClass.def ("__contains__", Algorithms::contains, policy);
     }
   };