diff --git a/.travis.yml b/.travis.yml
index 605785e7..23576f1b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,12 +10,15 @@ matrix:
     allow_failures:
         - php: hhvm
 
-script: vendor/bin/tester tests -s -c tests/php-unix.ini
+script:
+    - vendor/bin/tester tests -s -c tests/php-unix.ini
+    - php code-checker/src/code-checker.php
 
 after_failure:
     # Print *.actual content
     - for i in $(find tests -name \*.actual); do echo "--- $i"; cat $i; echo; echo; done
 
 before_script:
-    # Install Nette Tester
+    # Install Nette Tester & Code Checker
     - composer install --no-interaction --dev --prefer-source
+    - composer create-project nette/code-checker code-checker ~2.3 --no-interaction --prefer-source