diff --git a/src/Formatter.php b/src/Formatter.php
index d7af129..2c7d6b0 100644
--- a/src/Formatter.php
+++ b/src/Formatter.php
@@ -168,7 +168,9 @@ public static function excludePostNominals($values)
      */
     public static function nameCase($name = '', array $options = []): string
     {
-        if ($name == '') return $name;
+        if ($name == '' || $name == NULL) {
+            return $name;
+        }
 
         self::setOptions($options);