diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
index 44610ba..2a63b80 100644
--- a/.php-cs-fixer.dist.php
+++ b/.php-cs-fixer.dist.php
@@ -115,4 +115,5 @@
         (new Finder())
             ->in(__DIR__)
             ->exclude(['vendor', 'var', 'coverage', '.phpunit.cache'])
+            ->notName('reference.php')
     );