diff --git a/libraries/chain/include/eosio/chain/types.hpp b/libraries/chain/include/eosio/chain/types.hpp
index 0b435394f27..bfe6c8757e9 100644
--- a/libraries/chain/include/eosio/chain/types.hpp
+++ b/libraries/chain/include/eosio/chain/types.hpp
@@ -58,7 +58,6 @@ namespace eosio { namespace chain {
    using                               std::make_pair;
    using                               std::enable_shared_from_this;
    using                               std::tie;
-   using                               std::make_pair;
    using                               std::move;
    using                               std::forward;
    using                               std::to_string;