diff --git a/src/express-lane-auction/ExpressLaneAuction.sol b/src/express-lane-auction/ExpressLaneAuction.sol
index 55e57ad0..315fb7ed 100644
--- a/src/express-lane-auction/ExpressLaneAuction.sol
+++ b/src/express-lane-auction/ExpressLaneAuction.sol
@@ -288,7 +288,7 @@ contract ExpressLaneAuction is
     }
 
     /// @inheritdoc IExpressLaneAuction
-    function flushBeneficiaryBalance() public {
+    function flushBeneficiaryBalance() external {
         uint256 bal = beneficiaryBalance;
         if (bal == 0) {
             revert ZeroAmount();