diff --git a/test/src/helpers/updaterTestUtil.ts b/test/src/helpers/updaterTestUtil.ts
index 4125a22774b..6d38dcaf4c2 100644
--- a/test/src/helpers/updaterTestUtil.ts
+++ b/test/src/helpers/updaterTestUtil.ts
@@ -1,4 +1,4 @@
-import { serializeToYaml, TmpDir, executeAppBuilder } from "builder-util"
+import { serializeToYaml, TmpDir } from "builder-util"
 import { BintrayOptions, GenericServerOptions, GithubOptions, S3Options, SpacesOptions, DownloadOptions, KeygenOptions } from "builder-util-runtime"
 import { AppUpdater, NoOpLogger } from "electron-updater"
 import { MacUpdater } from "electron-updater/out/MacUpdater"
diff --git a/tsconfig-base.json b/tsconfig-base.json
index dbb292e43ed..76d4458b6e7 100644
--- a/tsconfig-base.json
+++ b/tsconfig-base.json
@@ -7,7 +7,7 @@
     "moduleResolution": "node",
     "skipLibCheck": true,
     "strict": true,
-    "noUnusedLocals": false,
+    "noUnusedLocals": true,
     "noFallthroughCasesInSwitch": true,
     "noImplicitReturns": true,