diff --git a/.travis.yml b/.travis.yml
index 41d121b..99c87f0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,11 +3,12 @@ sudo: required
 rust:
 - stable
 - nightly
-include:
-  - rust: stable
-    env: FEATURE=with_syntex TRAVIS_RUST_VERSION=stable
-  - rust: nightly
-    env: FEATURE=nightly TRAVIS_CARGO_NIGHTLY_FEATURE=nightly
+matrix:
+  include:
+    - rust: stable
+      env: FEATURE=with_syntex TRAVIS_RUST_VERSION=stable
+    - rust: nightly
+      env: FEATURE=nightly TRAVIS_CARGO_NIGHTLY_FEATURE=nightly
 before_script:
 - pip install 'travis-cargo<0.2' --user && export PATH=$HOME/.local/bin:$PATH
 script: