diff --git a/Library/NCLNameCaseRu.php b/Library/NCLNameCaseRu.php
index 1553e20..46b2102 100644
--- a/Library/NCLNameCaseRu.php
+++ b/Library/NCLNameCaseRu.php
@@ -4,6 +4,7 @@
 
 use seagullua\NameCaseLib\NCL\NCLNameCaseCore;
 use seagullua\NameCaseLib\NCL\NCLNameCaseWord;
+use seagullua\NameCaseLib\NCL\NCLStr;
 
 /**
  * @license Dual licensed under the MIT or GPL Version 2 licenses.