diff --git a/e2e/packages/contracts/src/systems/CustomErrorsSystem.sol b/e2e/packages/contracts/src/systems/CustomErrorsSystem.sol
index 7eab852b31..9a43670985 100644
--- a/e2e/packages/contracts/src/systems/CustomErrorsSystem.sol
+++ b/e2e/packages/contracts/src/systems/CustomErrorsSystem.sol
@@ -4,6 +4,8 @@ pragma solidity >=0.8.21;
 import { System } from "@latticexyz/world/src/System.sol";
 import { Position } from "../CustomTypes.sol";
 
+error ThisErrorShouldBeAbsentFromTheGeneratedSystemInterface();
+
 contract CustomErrorsSystem is System {
   error TestError1();
   error TestError2(Position position, uint256 value, string name, bool flag);