diff --git a/ext/nkf/nkf-utf8/nkf.h b/ext/nkf/nkf-utf8/nkf.h
index af44320f90..cd3037601b 100644
--- a/ext/nkf/nkf-utf8/nkf.h
+++ b/ext/nkf/nkf-utf8/nkf.h
@@ -1,7 +1,7 @@
 /*
- * 
+ *
  * nkf.h - Header file for nkf
- * 
+ *
  */
 
 #ifndef NKF_H