diff --git a/_posts/Linux/virtual/qemu-guide.md b/_posts/Linux/virtual/qemu-guide.md
index 39723be..1b6e7e7 100644
--- a/_posts/Linux/virtual/qemu-guide.md
+++ b/_posts/Linux/virtual/qemu-guide.md
@@ -119,7 +119,7 @@ qemu-system-x86_64 -m 1GB -boot cd -hda /server/kvm-1.qcow2 -mem-path /dev/hugep
 
 `-mtdblock file use 'file' as on-board Flash memory image`
 
-## -sd 参数
+## sd 参数
 
 为客户机指定一个SD卡。