diff --git a/src/Nethermind/Nethermind.Optimism/OptimismLegacyTxDecoder.cs b/src/Nethermind/Nethermind.Optimism/OptimismLegacyTxDecoder.cs
index d8b1bd6efec..bc8aea88a0e 100644
--- a/src/Nethermind/Nethermind.Optimism/OptimismLegacyTxDecoder.cs
+++ b/src/Nethermind/Nethermind.Optimism/OptimismLegacyTxDecoder.cs
@@ -16,7 +16,7 @@ public class OptimismLegacyTxDecoder : LegacyTxDecoder<Transaction>
     protected override Signature? DecodeSignature(ulong v, ReadOnlySpan<byte> rBytes, ReadOnlySpan<byte> sBytes, Signature? fallbackSignature = null,
         RlpBehaviors rlpBehaviors = RlpBehaviors.None)
     {
-        return base.DecodeSignature(v, rBytes, sBytes, fallbackSignature, rlpBehaviors | RlpBehaviors.AllowUnsigned);
+        return base.DecodeSignature(v, rBytes, sBytes, null, rlpBehaviors | RlpBehaviors.AllowUnsigned);
     }
 }