diff --git a/ubuntu_en.md b/ubuntu_en.md
index 2dc1965..35fad96 100644
--- a/ubuntu_en.md
+++ b/ubuntu_en.md
@@ -179,6 +179,7 @@ Host Volume            | Target Directory
 -----------------------|-----------------
 /dev/sda1              | /boot/efi
 /dev/mapper/vg1-ubuntu | /
+/dev/mapper/swap       | swap
 
 C A U T I O N : If the installer start the file copying, execute next script quickly before the installation finishes.