diff --git a/mat2 b/mat2
index 8c192e2..e8d1883 100755
--- a/mat2
+++ b/mat2
@@ -49,8 +49,9 @@ def create_arg_parser() -> argparse.ArgumentParser:
     parser.add_argument('-V', '--verbose', action='store_true',
                         help='show more verbose status information')
     parser.add_argument('--unknown-members', metavar='policy', default='abort',
-                        help='how to handle unknown members of archive-style files (policy should' +
-                        ' be one of: %s) [Default: abort]' % ', '.join(p.value for p in UnknownMemberPolicy))
+                        help='how to handle unknown members of archive-style '
+                        'files (policy should be one of: %s) [Default: abort]' %
+                        ', '.join(p.value for p in UnknownMemberPolicy))
 
 
     info = parser.add_mutually_exclusive_group()