diff --git a/crates/transaction-pool/src/validate/mod.rs b/crates/transaction-pool/src/validate/mod.rs
index 0ba716e0bffe..73fa8f7f9518 100644
--- a/crates/transaction-pool/src/validate/mod.rs
+++ b/crates/transaction-pool/src/validate/mod.rs
@@ -30,7 +30,7 @@ use reth_primitives_traits::Block;
 
 /// A Result type returned after checking a transaction's validity.
 #[derive(Debug)]
-pub enum TransactionValidationOutcome<T: PoolTransaction> {
+pub enum TransactionValidationOutcome<T: PoolTransaction, E = InvalidPoolTransactionError> {
     /// The transaction is considered _currently_ valid and can be inserted into the pool.
     Valid {
         /// Balance of the sender at the current point.
@@ -49,12 +49,12 @@ pub enum TransactionValidationOutcome<T: PoolTransaction> {
     },
     /// The transaction is considered invalid indefinitely: It violates constraints that prevent
     /// this transaction from ever becoming valid.
-    Invalid(T, InvalidPoolTransactionError),
+    Invalid(T, E),
     /// An error occurred while trying to validate the transaction
     Error(TxHash, Box<dyn core::error::Error + Send + Sync>),
 }
 
-impl<T: PoolTransaction> TransactionValidationOutcome<T> {
+impl<T: PoolTransaction, E> TransactionValidationOutcome<T, E> {
     /// Returns the hash of the transactions
     pub fn tx_hash(&self) -> TxHash {
         match self {