diff --git a/libraries/chain/include/graphene/chain/protocol/witness.hpp b/libraries/chain/include/graphene/chain/protocol/witness.hpp
index f1b3eb6e..2ab4c926 100644
--- a/libraries/chain/include/graphene/chain/protocol/witness.hpp
+++ b/libraries/chain/include/graphene/chain/protocol/witness.hpp
@@ -68,7 +68,9 @@ namespace graphene { namespace chain {
       optional< string > new_url;
       /// The new block signing key.
       optional< public_key_type > new_signing_key;
-
+      /// The new secreat hash.
+      optional<secret_hash_type> new_initial_secret;
+      
       account_id_type fee_payer()const { return witness_account; }
       void            validate()const;
    };