diff --git a/.travis.yml b/.travis.yml
index 768036b7..1eac618c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -43,6 +43,8 @@ jobs:
     script:
     - make vet
     - make lint
+    - make fmt
+    - if [[ $(git diff --stat) != '' ]]; then echo 'Invalid formatting!' >&2; exit 1; fi
   - stage: compile
     script:
     - make generate