diff --git a/Software/Applications/Pacman/Pacman.md b/Software/Applications/Pacman/Pacman.md
index 995397c..53287e8 100644
--- a/Software/Applications/Pacman/Pacman.md
+++ b/Software/Applications/Pacman/Pacman.md
@@ -42,6 +42,8 @@ pacman -Syu
 
 ## 问题处理
 
+### conflicting files
+
 在升级或安装软件包时经常遇到如下错误：
 
 ```sh