diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
index 031b40e..0027114 100644
--- a/.php-cs-fixer.dist.php
+++ b/.php-cs-fixer.dist.php
@@ -11,6 +11,7 @@ return $config->setRules([
         'align_multiline_comment' => ['comment_type' => 'phpdocs_like'],
         //'strict_param' => true,
         'array_syntax' => ['syntax' => 'short'],
+        'concat_space' => ['spacing' => 'one'],
     ])
     ->setFinder($finder)
 ;