diff --git a/src/Illuminate/Support/Str.php b/src/Illuminate/Support/Str.php
index 06c6a2f19f47..51b594a64af9 100644
--- a/src/Illuminate/Support/Str.php
+++ b/src/Illuminate/Support/Str.php
@@ -473,11 +473,7 @@ public static function kebab($value)
      */
     public static function length($value, $encoding = null)
     {
-        if ($encoding) {
-            return mb_strlen($value, $encoding);
-        }
-
-        return mb_strlen($value);
+        return mb_strlen($value, $encoding);
     }
 
     /**