diff --git a/appveyor.yml b/appveyor.yml
index 1bef3980562..1ff596d5b00 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -19,6 +19,7 @@ before_build:
 
 build_script:
 - cmd: npm install
+- cmd: npm run lint
 - cmd: npm run build
 - cmd: npm run test
 - cmd: 7z a coverage-%APPVEYOR_BUILD_NUMBER%.zip coverage\*
diff --git a/package.json b/package.json
index 03e5e619c69..d10190eccf4 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "clean": "rimraf dist/**/*",
     "build": "npm run clean && tsc",
     "build:watch": "npm run clean && tsc -watch",
-    "lint": "tslint src/**/*.ts spec/**/*.ts || true",
+    "lint": "tslint src/**/*.ts spec/**/*.ts",
     "lint:fix": "tslint src/**/*.ts spec/**/*.ts --fix",
     "test": "karma start ./spec/support/karma.conf.js --single-run",
     "test:watch": "karma start ./spec/support/karma.conf.js",