diff --git a/composer.json b/composer.json
index 9ac6421..5c52a58 100644
--- a/composer.json
+++ b/composer.json
@@ -47,7 +47,7 @@
             "@phpunit"
         ],
         "check-cs": [
-            "php-cs-fixer fix --dry-run --diff"
+            "PHP_CS_FIXER_IGNORE_ENV=true php-cs-fixer fix --dry-run --diff"
         ],
         "fix-cs": [
             "php-cs-fixer fix"