diff --git a/src/Umbraco.Web.UI.Client/eslint.config.js b/src/Umbraco.Web.UI.Client/eslint.config.js
index bd97a225f8..3edaa890a5 100644
--- a/src/Umbraco.Web.UI.Client/eslint.config.js
+++ b/src/Umbraco.Web.UI.Client/eslint.config.js
@@ -76,7 +76,7 @@ export default [
 			],
 			'@typescript-eslint/no-non-null-assertion': 'off',
 			'@typescript-eslint/no-explicit-any': 'warn',
-			'@typescript-eslint/no-unused-vars': 'warn',
+			'@typescript-eslint/no-unused-vars': 'error',
 			'@typescript-eslint/consistent-type-exports': 'error',
 			'@typescript-eslint/consistent-type-imports': 'error',
 			'@typescript-eslint/no-import-type-side-effects': 'warn',