diff --git a/docs/Getting Started/NixOS/Root on ZFS/3-system-configuration.rst b/docs/Getting Started/NixOS/Root on ZFS/3-system-configuration.rst
index 6acbd77..89bdd5a 100644
--- a/docs/Getting Started/NixOS/Root on ZFS/3-system-configuration.rst	
+++ b/docs/Getting Started/NixOS/Root on ZFS/3-system-configuration.rst	
@@ -9,7 +9,7 @@ System Configuration
 #. Enter ephemeral nix-shell with git support::
 
      mkdir -p /mnt/etc/
-     echo DISK=$DISK > ~/disk
+     echo DISK=\"$DISK\" > ~/disk
 
      nix-shell -p git