diff --git a/students26.txt b/students26.txt
index 4d2c8f49..23eac2ec 100644
--- a/students26.txt
+++ b/students26.txt
@@ -91,6 +91,6 @@ Ossama	Zaroual
 Xinle	Zhang
 Yihan	Zhang
 Xiaoyu	Zhao
-Xiao	Zhou
+Xiao	Zhou   X
 Yilin	Zhou
 Jia	Zhu