diff --git a/.travis.yml b/.travis.yml
index 143abfb8e2..a4dc35d2b2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,7 +16,12 @@ matrix:
     - env: JOB=HOUSEKEEPING
       install: ./bin/fetch-configlet
       before_script: ./bin/check-readmes.sh
-      script: ./bin/configlet lint .
+      script:
+        # May provide more useful output than configlet fmt
+        # if JSON is not valid or items are incomplete
+        - ./bin/configlet lint .
+        # Verify correct formatting in config.json
+        - ./bin/configlet fmt . && git diff --quiet
   allow_failures:
     - python: nightly