diff --git a/libraries/api/chain_api_properties.cpp b/libraries/api/chain_api_properties.cpp
index f2b329630a..50245b5d37 100644
--- a/libraries/api/chain_api_properties.cpp
+++ b/libraries/api/chain_api_properties.cpp
@@ -40,6 +40,7 @@ namespace golos { namespace api {
             worker_from_vesting_fund_percent = src.worker_from_vesting_fund_percent;
             worker_from_witness_fund_percent = src.worker_from_witness_fund_percent;
             worker_techspec_approve_term_sec = src.worker_techspec_approve_term_sec;
+            worker_result_approve_term_sec = src.worker_result_approve_term_sec;
             min_vote_author_promote_rate = src.min_vote_author_promote_rate;
             max_vote_author_promote_rate = src.max_vote_author_promote_rate;
         }