diff --git a/Libplanet.Net/Swarm.BlockSync.cs b/Libplanet.Net/Swarm.BlockSync.cs
index e503d3b6792..9151327e30c 100644
--- a/Libplanet.Net/Swarm.BlockSync.cs
+++ b/Libplanet.Net/Swarm.BlockSync.cs
@@ -76,7 +76,7 @@ public partial class Swarm<T>
 
             var totalBlocksToDownload = 0L;
             Block<T> tempTip = BlockChain.Tip;
-            List<Block<T>> blocks = new List<Block<T>>();
+            var blocks = new List<Block<T>>();
 
             try
             {