diff --git a/database/src/postgres/rpc_server.rs b/database/src/postgres/rpc_server.rs
index 1d3ed4bd..a3567189 100644
--- a/database/src/postgres/rpc_server.rs
+++ b/database/src/postgres/rpc_server.rs
@@ -385,7 +385,7 @@ impl crate::ReaderDbManager for crate::PostgresDBManager {
         .bind(bigdecimal::BigDecimal::from(request_block_height))
         .fetch_one(shard_id_pool.pool)
         .await?;
-        Ok(code_size.to_u64().map(|size| size).unwrap_or_default())
+        Ok(code_size.to_u64().unwrap_or_default())
     }
 
     async fn get_access_key(