diff --git a/eslint.config.ts b/eslint.config.ts
index 91aa3ffa..0ec7d58a 100644
--- a/eslint.config.ts
+++ b/eslint.config.ts
@@ -43,6 +43,7 @@ export default [
             'no-unreachable-loop': 'warn',
             'no-use-before-define': 'error',
             'no-useless-assignment': 'error',
+            'no-unused-vars': 'error',
 
             'arrow-body-style': ['warn', 'as-needed'],
             'block-scoped-var': 'warn',
diff --git a/frontend/eslint.config.ts b/frontend/eslint.config.ts
index 9e68e9c0..76822361 100644
--- a/frontend/eslint.config.ts
+++ b/frontend/eslint.config.ts
@@ -14,6 +14,9 @@ const vueConfig = defineConfigWithVueTs(
     {
         name: "app/files-to-lint",
         files: ["**/*.{ts,mts,tsx,vue}"],
+        rules: {
+            'no-useless-assignment': 'off' // Depend on `no-unused-vars` to catch this
+        }
     },
 
     {