diff --git a/Security/PhpCode.php b/Security/PhpCode.php
index b70039a69..b9883c9ba 100644
--- a/Security/PhpCode.php
+++ b/Security/PhpCode.php
@@ -79,7 +79,7 @@ class PhpCode
      */
     public static function hasUnicode(string $source) : bool
     {
-        return (bool) preg_match('/[^\x20-\x7f]/', $source) || !mb_check_encoding($source, 'ASCII');
+        return (bool) preg_match('/[^\x00-\x7f]/', $source);
     }
 
     /**
diff --git a/Utils/ArrayUtils.php b/Utils/ArrayUtils.php
index cb197ac34..f93fdfa8a 100644
--- a/Utils/ArrayUtils.php
+++ b/Utils/ArrayUtils.php
@@ -325,7 +325,6 @@ class ArrayUtils
      */
     public static function arrayFlatten(array $array) : array
     {
-
         // see collection collapse as alternative?!
         $flat  = [];
         $stack = array_values($array);