diff --git a/Lib9c/Action/RewardGold.cs b/Lib9c/Action/RewardGold.cs
index 6d88760249..a4a60fcafb 100644
--- a/Lib9c/Action/RewardGold.cs
+++ b/Lib9c/Action/RewardGold.cs
@@ -307,12 +307,10 @@ public IWorld MinerReward(IActionContext ctx, IWorld states)
 
         public static IWorld TransferMead(IActionContext context, IWorld states)
         {
-            var targetAddresses = context.Txs is { } txs
-                ? txs
-                    .Where(tx => tx.MaxGasPrice is { } price && price.Currency.Equals(Currencies.Mead))
-                    .Select(tx => tx.Signer)
-                    .Distinct()
-                : throw new NullReferenceException();
+            var targetAddresses = context.Txs
+                .Where(tx => tx.MaxGasPrice is { } price && price.Currency.Equals(Currencies.Mead))
+                .Select(tx => tx.Signer)
+                .Distinct();
             foreach (var address in targetAddresses)
             {
                 var contractAddress = address.GetPledgeAddress();