diff --git a/editors/code/package.json b/editors/code/package.json
index 78b1e6b9bf..808dc5dc1b 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -25,7 +25,7 @@
         "lint": "tslint --project .",
         "test": "node node_modules/vscode/bin/test",
         "prettier": "prettier **/*.{json,ts}",
-        "travis": "npm run compile && npm run test && npm run lint && npm run prettier -- --check"
+        "travis": "npm run compile && npm run test && npm run lint && npm run prettier -- --write && git diff --exit-code"
     },
     "prettier": {
         "tabWidth": 4,