diff --git a/.travis.yml b/.travis.yml
index f9a7c0b..94188c9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,9 @@ php:
   - 5.4
   - 5.3
 before_install:
+  - pear config-set auto_discover 1
   - pear install pear/PHP_CodeSniffer
+  - pear install pear.phpunit.de/phpcpd
   - phpenv rehash
 before_script:
   - git clone --branch=master --depth=1 --quiet git://github.com/WoltLab/WCF.git WCF
@@ -15,3 +17,4 @@ before_script:
 script:
   - find file -type f -name '*.php' |xargs -I file php -l file
   - phpcs -p --extensions=php --standard="`pwd`/WCF/CodeSniff/WCF" file
+  - phpcpd file
\ No newline at end of file