diff --git a/lib/domains/cn/ac/xao.txt b/lib/domains/cn/ac/xao.txt
index 8ce37949b4..1ea7dae43c 100644
--- a/lib/domains/cn/ac/xao.txt
+++ b/lib/domains/cn/ac/xao.txt
@@ -1,3 +1,2 @@
 中国科学院新疆天文台
-
 Xinjiang Astronomical Observatory, Chinese Academy of Sciences