diff --git a/Debian-Stretch-Root-on-ZFS.md b/Debian-Stretch-Root-on-ZFS.md
index 14ee17e..4e85df3 100644
--- a/Debian-Stretch-Root-on-ZFS.md
+++ b/Debian-Stretch-Root-on-ZFS.md
@@ -33,7 +33,7 @@ If you have a second system, using SSH to access the target system can be conven
 
 1.4  Add `contrib` archive area:
 
-    # cat "deb http://ftp.debian.org/debian stretch main contrib" > /etc/apt/sources.list
+    # echo "deb http://ftp.debian.org/debian stretch main contrib" > /etc/apt/sources.list
     # apt update
 
 1.5  Install ZFS in the Live CD environment: