diff --git a/include/toml_fwd.hpp b/include/toml_fwd.hpp
index af9ada6..3ba77ff 100644
--- a/include/toml_fwd.hpp
+++ b/include/toml_fwd.hpp
@@ -52,8 +52,7 @@ struct local_time_format_info;
 struct array_format_info;
 struct table_format_info;
 
-template<typename Key, typename Val, typename Cmp = std::equal_to<Key>,
-         typename Allocator = std::allocator<std::pair<Key, Val>>>
+template<typename Key, typename Val, typename Cmp, typename Allocator>
 class ordered_map;
 
 struct syntax_error;