diff --git a/src/Nethermind/Nethermind.Merge.Plugin/Handlers/NewPayloadHandler.cs b/src/Nethermind/Nethermind.Merge.Plugin/Handlers/NewPayloadHandler.cs
index b7712ee4fe0..64293079503 100644
--- a/src/Nethermind/Nethermind.Merge.Plugin/Handlers/NewPayloadHandler.cs
+++ b/src/Nethermind/Nethermind.Merge.Plugin/Handlers/NewPayloadHandler.cs
@@ -159,7 +159,7 @@ public async Task<ResultWrapper<PayloadStatusV1>> HandleAsync(ExecutionPayload r
         {
             if (!_blockValidator.ValidateSuggestedBlock(block, out string? error, validateHashes: false))
             {
-                if (_logger.IsWarn) _logger.Warn(InvalidBlockHelper.GetMessage(block, "suggested block is invalid"));
+                if (_logger.IsWarn) _logger.Warn(InvalidBlockHelper.GetMessage(block, $"suggested block is invalid, {error}"));
                 return NewPayloadV1Result.Invalid(error);
             }
 
diff --git a/src/Nethermind/Nethermind.Optimism/InitializeBlockchainOptimism.cs b/src/Nethermind/Nethermind.Optimism/InitializeBlockchainOptimism.cs
index f7ce6c9b833..79208162e76 100644
--- a/src/Nethermind/Nethermind.Optimism/InitializeBlockchainOptimism.cs
+++ b/src/Nethermind/Nethermind.Optimism/InitializeBlockchainOptimism.cs
@@ -27,12 +27,12 @@ public class InitializeBlockchainOptimism(OptimismNethermindApi api) : Initializ
 
     protected override async Task InitBlockchain()
     {
-        api.RegisterTxType<OptimismTransactionForRpc>(new OptimismTxDecoder<Transaction>(), Always.Valid);
-
         api.SpecHelper = new(api.ChainSpec.Optimism);
         api.L1CostHelper = new(api.SpecHelper, api.ChainSpec.Optimism.L1BlockAddress);
 
         await base.InitBlockchain();
+
+        api.RegisterTxType<OptimismTransactionForRpc>(new OptimismTxDecoder<Transaction>(), Always.Valid);
     }
 
     protected override ITransactionProcessor CreateTransactionProcessor(CodeInfoRepository codeInfoRepository, VirtualMachine virtualMachine)