diff --git a/src/neo/Consensus/ConsensusMessage.cs b/src/neo/Consensus/ConsensusMessage.cs
index 856ccdc72b..53a28e7830 100644
--- a/src/neo/Consensus/ConsensusMessage.cs
+++ b/src/neo/Consensus/ConsensusMessage.cs
@@ -15,7 +15,7 @@ public abstract class ConsensusMessage : ISerializable
         protected ConsensusMessage(ConsensusMessageType type)
         {
             if (!Enum.IsDefined(typeof(ConsensusMessageType), type))
-                throw new ArgumentOutOfRangeException(nameof(type));
+                throw new FormatException(nameof(type));
             this.Type = type;
         }
 
diff --git a/src/neo/Network/P2P/Payloads/TransactionAttribute.cs b/src/neo/Network/P2P/Payloads/TransactionAttribute.cs
index d4c31b2e49..fde51ee0f3 100644
--- a/src/neo/Network/P2P/Payloads/TransactionAttribute.cs
+++ b/src/neo/Network/P2P/Payloads/TransactionAttribute.cs
@@ -39,7 +39,7 @@ public static TransactionAttribute FromJson(JObject json)
             TransactionAttribute transactionAttribute = new TransactionAttribute();
             transactionAttribute.Usage = (TransactionAttributeUsage)byte.Parse(json["usage"].AsString());
             if (!Enum.IsDefined(typeof(TransactionAttributeUsage), transactionAttribute.Usage))
-                throw new ArgumentException();
+                throw new FormatException();
             transactionAttribute.Data = Convert.FromBase64String(json["data"].AsString());
             return transactionAttribute;
         }