gawk with finding a line end with a word

ll | gawk '{if($8~/..*s$/) {print }}'
-rw-r--r--  1 sam  sam       127 2012-10-20 09:51 .gtk-bookmarks
-rw-------  1 sam  sam     16955 2012-10-20 11:00 .xsession-errors
sam@sam-Lenovo-G450:~$