hi, i need some help

im a newby in linux i send this command to delete a script in my files:

rm /var/www/mywebs/web1/OSWallpaper_beta-1-5


im trying to delete the OSWallpaper_beta-1-5 but it gives me error message

rm: cannot remove directory /var/www/mywebs/web1/OSWallpaper_beta-1-5

what can i do to solve this?