diff --git a/legacy/.php-cs-fixer.php b/legacy/.php-cs-fixer.php
index 772fc7770..7e24cf328 100644
--- a/legacy/.php-cs-fixer.php
+++ b/legacy/.php-cs-fixer.php
@@ -9,7 +9,6 @@ $config = new PhpCsFixer\Config();
 return $config->setRules([
     '@PhpCsFixer' => true,
     'concat_space' => ['spacing' => 'one'],
-    'escape_implicit_backslashes' => false,
     'ordered_class_elements' => false,
     'yoda_style' => false,
 ])