diff --git a/packages/core/package.json b/packages/core/package.json
index a558962a4b..379914ced1 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -5,7 +5,7 @@
   "main": "dist/collection/collection-manifest.json",
   "scripts": {
     "build": "npm run copy.vendor && stencil build --prod",
-    "dev": "concurrently --raw \"stencil build --watch --debug\" \"stencil-dev-server\"",
+    "dev": "concurrently --raw \"stencil build --watch\" \"stencil-dev-server\"",
     "copy.vendor": "mkdir -p ./dist/collection/vendor && cp -Rf ./src/vendor ./dist/collection",
     "link.stencil": "npm link @stencil/core",
     "test": "jest"