diff --git a/packages/contracts-bedrock/src/L2/L2ToL2CrossDomainMessenger.sol b/packages/contracts-bedrock/src/L2/L2ToL2CrossDomainMessenger.sol
index 0d7b46080fc93..95af6b00486cd 100644
--- a/packages/contracts-bedrock/src/L2/L2ToL2CrossDomainMessenger.sol
+++ b/packages/contracts-bedrock/src/L2/L2ToL2CrossDomainMessenger.sol
@@ -10,6 +10,7 @@ import { IL2ToL2CrossDomainMessenger } from "src/L2/interfaces/IL2ToL2CrossDomai
 import { ISemver } from "src/universal/interfaces/ISemver.sol";
 import { SafeCall } from "src/libraries/SafeCall.sol";
 import { TransientReentrancyAware } from "src/libraries/TransientContext.sol";
+import { Constants } from "src/libraries/Constants.sol";
 
 /// @notice Thrown when a non-written slot in transient storage is attempted to be read from.
 error NotEntered();
@@ -92,12 +93,6 @@ contract L2ToL2CrossDomainMessenger is IL2ToL2CrossDomainMessenger, ISemver, Tra
     /// @param messageHash  Hash of the message that was relayed.
     event RelayedMessage(uint256 indexed source, uint256 indexed messageNonce, bytes32 indexed messageHash);
 
-    /// @notice Emitted whenever a message fails to be relayed on this chain.
-    /// @param source       Chain ID of the source chain.
-    /// @param messageNonce Nonce associated with the messsage sent
-    /// @param messageHash  Hash of the message that failed to be relayed.
-    event FailedRelayedMessage(uint256 indexed source, uint256 indexed messageNonce, bytes32 indexed messageHash);
-
     /// @notice Retrieves the sender of the current cross domain message. If not entered, reverts.
     /// @return sender_ Address of the sender of the current cross domain message.
     function crossDomainMessageSender() external view onlyEntered returns (address sender_) {
@@ -204,7 +199,7 @@ contract L2ToL2CrossDomainMessenger is IL2ToL2CrossDomainMessenger, ISemver, Tra
             successfulMessages[messageHash] = true;
             emit RelayedMessage(source, nonce, messageHash);
         } else {
-            emit FailedRelayedMessage(source, nonce, messageHash);
+            revert("L2ToL2CrossDomainMessenger: failed to relay message");
         }
 
         _storeMessageMetadata(0, address(0));
diff --git a/packages/contracts-bedrock/test/L2/L2ToL2CrossDomainMessenger.t.sol b/packages/contracts-bedrock/test/L2/L2ToL2CrossDomainMessenger.t.sol
index e0149e8aab781..731511afc40d1 100644
--- a/packages/contracts-bedrock/test/L2/L2ToL2CrossDomainMessenger.t.sol
+++ b/packages/contracts-bedrock/test/L2/L2ToL2CrossDomainMessenger.t.sol
@@ -402,12 +402,6 @@ contract L2ToL2CrossDomainMessengerTest is Test {
         address target = address(this);
         bytes memory message = abi.encodeWithSelector(this.mockTargetReentrant.selector, _source2, _nonce, _sender2);
 
-        // Look for correct emitted event
-        vm.expectEmit(Predeploys.L2_TO_L2_CROSS_DOMAIN_MESSENGER);
-        emit L2ToL2CrossDomainMessenger.FailedRelayedMessage(
-            _source1, _nonce, keccak256(abi.encode(block.chainid, _source1, _nonce, _sender1, target, message))
-        );
-
         // Ensure the target contract is called with the correct parameters
         vm.expectCall({ callee: target, msgValue: _value, data: message });
 
@@ -426,6 +420,7 @@ contract L2ToL2CrossDomainMessengerTest is Test {
             returnData: ""
         });
 
+        vm.expectRevert("L2ToL2CrossDomainMessenger: failed to relay message");
         hoax(Predeploys.L2_TO_L2_CROSS_DOMAIN_MESSENGER, _value);
         l2ToL2CrossDomainMessenger.relayMessage{ value: _value }(id, sentMessage);
 
@@ -673,12 +668,6 @@ contract L2ToL2CrossDomainMessengerTest is Test {
         // Ensure that the target contract reverts
         vm.mockCallRevert({ callee: _target, msgValue: _value, data: _message, revertData: abi.encode(false) });
 
-        // Look for correct emitted event
-        vm.expectEmit(Predeploys.L2_TO_L2_CROSS_DOMAIN_MESSENGER);
-        emit L2ToL2CrossDomainMessenger.FailedRelayedMessage(
-            _source, _nonce, keccak256(abi.encode(block.chainid, _source, _nonce, _sender, _target, _message))
-        );
-
         ICrossL2Inbox.Identifier memory id =
             ICrossL2Inbox.Identifier(Predeploys.L2_TO_L2_CROSS_DOMAIN_MESSENGER, _blockNum, _logIndex, _time, _source);
         bytes memory sentMessage = abi.encodePacked(
@@ -693,6 +682,7 @@ contract L2ToL2CrossDomainMessengerTest is Test {
             returnData: ""
         });
 
+        vm.expectRevert("L2ToL2CrossDomainMessenger: failed to relay message");
         hoax(Predeploys.L2_TO_L2_CROSS_DOMAIN_MESSENGER, _value);
         l2ToL2CrossDomainMessenger.relayMessage{ value: _value }(id, sentMessage);
     }