diff --git a/plugins/mongo_db_plugin/mongo_db_plugin.cpp b/plugins/mongo_db_plugin/mongo_db_plugin.cpp
index 4aaea9b3298..1a9867f61af 100644
--- a/plugins/mongo_db_plugin/mongo_db_plugin.cpp
+++ b/plugins/mongo_db_plugin/mongo_db_plugin.cpp
@@ -43,7 +43,6 @@ using chain::permission_name;
 using chain::transaction;
 using chain::signed_transaction;
 using chain::signed_block;
-using chain::block_trace;
 using chain::transaction_id_type;
 using chain::packed_transaction;