diff --git a/aio/package.json b/aio/package.json
index 5739cfbbcb..ed49363480 100644
--- a/aio/package.json
+++ b/aio/package.json
@@ -10,7 +10,7 @@
     "aio-use-npm": "node tools/ng-packages-installer restore .",
     "aio-check-local": "node tools/ng-packages-installer check .",
     "ng": "yarn check-env && ng",
-    "start": "yarn check-env && ng serve",
+    "start": "yarn check-env && ng serve --aot",
     "prebuild": "yarn setup",
     "build": "yarn ~~build",
     "prebuild-local": "yarn setup-local",