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1 files changed, 2 insertions, 2 deletions

diff --git a/tsig-keygen.py b/tsig-keygen.py
index 4dfc192..2241759 100644..100755
--- a/tsig-keygen.py
+++ b/tsig-keygen.py
@@ -55,9 +55,9 @@ zone:
 ''')
 
 ap = argparse.ArgumentParser(description = __doc__)
-ap.add_argument("-a", "--algorithm", choices = algorithm_choices, default = algorithm_choices[0])
+ap.add_argument("-a", "--algorithm", choices = algorithm_choices, default = algorithm_choices[0], help = "TSIG algorithm")
 ap.add_argument("-d", "--directory", default = "secondary", help = "where to store secondary zone files")
-ap.add_argument("-f", "--format",    choices = tuple(templates), default = "nsd")
+ap.add_argument("-f", "--format",    choices = tuple(templates), default = "nsd", help = "output format (default: nsd")
 ap.add_argument("-k", "--key",       help = "TSIG shared secret (default: generate new secret)")
 ap.add_argument("-n", "--name",      default = "tsig.example.org", help = "DNS name for TSIG shared secret")
 ap.add_argument("-o", "--output",    default = "-", type = argparse.FileType("w"), help = "output file")