diff --git a/src/wallet/wallet_public_structs_defs.h b/src/wallet/wallet_public_structs_defs.h
index aaba1359..6bebcd37 100644
--- a/src/wallet/wallet_public_structs_defs.h
+++ b/src/wallet/wallet_public_structs_defs.h
@@ -335,10 +335,12 @@ namespace wallet_public
     {
       std::string tx_hash;
       std::string tx_unsigned_hex; // for cold-signing process
+      uint64_t tx_size;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(tx_hash)
         KV_SERIALIZE(tx_unsigned_hex)
+        KV_SERIALIZE(tx_size)
       END_KV_SERIALIZE_MAP()
     };
   };
diff --git a/src/wallet/wallet_rpc_server.cpp b/src/wallet/wallet_rpc_server.cpp
index 6d3987da..698a181a 100644
--- a/src/wallet/wallet_rpc_server.cpp
+++ b/src/wallet/wallet_rpc_server.cpp
@@ -300,6 +300,7 @@ namespace tools
       else
       {
         res.tx_hash = epee::string_tools::pod_to_hex(currency::get_transaction_hash(tx));
+        res.tx_size = get_object_blobsize(tx);
       }
       return true;
     }