diff --git a/mkinitramfs-ll.1 b/mkinitramfs-ll.1
index 32cfa72..af52b33 100644
--- a/mkinitramfs-ll.1
+++ b/mkinitramfs-ll.1
@@ -383,7 +383,7 @@ is the root directory where to mount AUFS tree (default is `/aufs'.)
 The second
 .IR option
 is case insensitive
-.RB +S[system]|+L[ocal]
+.RB [+S[system]][:+L[ocal]]
 to use system default (`usr:bin:sbin') and local default
 (`var/cache/edb:var/db:var/lib/layman') directory sets.
 Third optional