diff --git a/rotate_backups/cli.py b/rotate_backups/cli.py
index b500a85..6d89b4a 100644
--- a/rotate_backups/cli.py
+++ b/rotate_backups/cli.py
@@ -246,7 +246,7 @@ def main():
     selected_locations = []
     # Parse the command line arguments.
     try:
-        options, arguments = getopt.getopt(sys.argv[1:], 'M:H:d:w:m:y:t:I:x:jpri:c:C:uUS:fnvqh', [
+        options, arguments = getopt.getopt(sys.argv[1:], 'M:H:d:w:m:y:t:I:x:jpri:c:C:usS:fnvqh', [
             'minutely=', 'hourly=', 'daily=', 'weekly=', 'monthly=', 'yearly=',
             'timestamp-pattern=', 'include=', 'exclude=', 'parallel',
             'prefer-recent', 'relaxed', 'ionice=', 'config=',