diff --git a/model/sync-diff-leaf.cc b/model/sync-diff-leaf.cc
index d2b7d7f..bdbbd1b 100644
--- a/model/sync-diff-leaf.cc
+++ b/model/sync-diff-leaf.cc
@@ -16,7 +16,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  * Author: Zhenkai Zhu <zhenkai@cs.ucla.edu>
- *         卞超轶 Chaoyi Bian <bcy@pku.edu.cn>
+ *         Chaoyi Bian <bcy@pku.edu.cn>
  *	   Alexander Afanasyev <alexander.afanasyev@ucla.edu>
  */