diff --git a/.travis.yml b/.travis.yml
index b1c481569..2628c0d7d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,11 +6,11 @@ matrix:
       env: CONTAINER=fedora28
       services: docker
     - name: "Debian Stable"
-    - os: linux
+      os: linux
       env: CONTAINER=debianstable
       services: docker
     - name: "Ubuntu 16.04"
-    - os: linux
+      os: linux
       env: CONTAINER=ubuntu1604
       services: docker
     - name: "Mac OS X"