diff --git a/crates/primitives/src/result.rs b/crates/primitives/src/result.rs
index f3de017438..cf6e608c48 100644
--- a/crates/primitives/src/result.rs
+++ b/crates/primitives/src/result.rs
@@ -223,45 +223,6 @@ impl<DBError, TransactionValidationErrorT> From<InvalidHeader>
     }
 }
 
-/// Transaction validation error for Optimism.
-#[cfg(feature = "optimism")]
-#[derive(Debug, Clone, PartialEq, Eq, Hash)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
-pub enum OptimismInvalidTransaction {
-    /// System transactions are not supported post-regolith hardfork.
-    ///
-    /// Before the Regolith hardfork, there was a special field in the `Deposit` transaction
-    /// type that differentiated between `system` and `user` deposit transactions. This field
-    /// was deprecated in the Regolith hardfork, and this error is thrown if a `Deposit` transaction
-    /// is found with this field set to `true` after the hardfork activation.
-    ///
-    /// In addition, this error is internal, and bubbles up into a [HaltReason::FailedDeposit] error
-    /// in the `revm` handler for the consumer to easily handle. This is due to a state transition
-    /// rule on OP Stack chains where, if for any reason a deposit transaction fails, the transaction
-    /// must still be included in the block, the sender nonce is bumped, the `mint` value persists, and
-    /// special gas accounting rules are applied. Normally on L1, [EVMError::Transaction] errors
-    /// are cause for non-inclusion, so a special [HaltReason] variant was introduced to handle this
-    /// case for failed deposit transactions.
-    #[cfg(feature = "optimism")]
-    DepositSystemTxPostRegolith,
-    /// Deposit transaction haults bubble up to the global main return handler, wiping state and
-    /// only increasing the nonce + persisting the mint value.
-    ///
-    /// This is a catch-all error for any deposit transaction that is results in a [HaltReason] error
-    /// post-regolith hardfork. This allows for a consumer to easily handle special cases where
-    /// a deposit transaction fails during validation, but must still be included in the block.
-    ///
-    /// In addition, this error is internal, and bubbles up into a [HaltReason::FailedDeposit] error
-    /// in the `revm` handler for the consumer to easily handle. This is due to a state transition
-    /// rule on OP Stack chains where, if for any reason a deposit transaction fails, the transaction
-    /// must still be included in the block, the sender nonce is bumped, the `mint` value persists, and
-    /// special gas accounting rules are applied. Normally on L1, [EVMError::Transaction] errors
-    /// are cause for non-inclusion, so a special [HaltReason] variant was introduced to handle this
-    /// case for failed deposit transactions.
-    #[cfg(feature = "optimism")]
-    HaltedDepositPostRegolith,
-}
-
 /// Transaction validation error.
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
@@ -336,22 +297,6 @@ pub enum InvalidTransaction {
 #[cfg(feature = "std")]
 impl std::error::Error for InvalidTransaction {}
 
-#[cfg(feature = "optimism")]
-impl fmt::Display for OptimismInvalidTransaction {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            Self::DepositSystemTxPostRegolith => write!(
-                f,
-                "deposit system transactions post regolith hardfork are not supported"
-            ),
-            Self::HaltedDepositPostRegolith => write!(
-                f,
-                "deposit transaction halted post-regolith; error will be bubbled up to main return handler"
-            ),
-        }
-    }
-}
-
 impl fmt::Display for InvalidTransaction {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
diff --git a/crates/revm/src/optimism/env.rs b/crates/revm/src/optimism/env.rs
index 7a155a2a11..32863938aa 100644
--- a/crates/revm/src/optimism/env.rs
+++ b/crates/revm/src/optimism/env.rs
@@ -102,7 +102,7 @@ impl OptimismTransaction for TxEnv {
     }
 
     fn is_system_transaction(&self) -> Option<bool> {
-        self.is_system_transaction.clone()
+        self.is_system_transaction
     }
 
     fn enveloped_tx(&self) -> Option<Bytes> {