diff --git a/include/boost/fusion/adapted/struct/detail/extension.hpp b/include/boost/fusion/adapted/struct/detail/extension.hpp
index 2ba3bf70..1f9f4f75 100644
--- a/include/boost/fusion/adapted/struct/detail/extension.hpp
+++ b/include/boost/fusion/adapted/struct/detail/extension.hpp
@@ -20,7 +20,7 @@ namespace boost { namespace fusion
     struct fusion_sequence_tag;
 
     struct assoc_struct_category
-      : bidirectional_traversal_tag, associative_tag
+      : random_access_traversal_tag, associative_tag
     {};
 
     namespace extension