diff --git a/aio/package.json b/aio/package.json
index 27ddf4d239..50de3f9b39 100644
--- a/aio/package.json
+++ b/aio/package.json
@@ -10,7 +10,7 @@
     "ng": "yarn check-env && ng",
     "start": "yarn check-env && ng serve",
     "build": "yarn check-env && yarn docs && ng build -prod -sm",
-    "test": "yarn check-env && ng test",
+    "test": "yarn check-env && ng test --sourcemap=false",
     "lint": "yarn check-env && ng lint",
     "pree2e": "webdriver-manager update --standalone false --gecko false",
     "e2e": "yarn check-env && ng e2e --no-webdriver-update",