diff --git a/src/borg/archiver.py b/src/borg/archiver.py
index 496d14d4d..4536b83d8 100644
--- a/src/borg/archiver.py
+++ b/src/borg/archiver.py
@@ -2516,7 +2516,7 @@ class Archiver:
         subparser.add_argument('-e', '--encryption', dest='encryption', required=True,
                                choices=('none', 'keyfile', 'repokey', 'keyfile-blake2', 'repokey-blake2', 'authenticated'),
                                help='select encryption key mode **(required)**')
-        subparser.add_argument('-a', '--append-only', dest='append_only', action='store_true',
+        subparser.add_argument('--append-only', dest='append_only', action='store_true',
                                help='create an append-only mode repository')
         subparser.add_argument('--storage-quota', dest='storage_quota', default=None,
                                type=parse_storage_quota,
@@ -3485,7 +3485,7 @@ class Archiver:
         subparser.add_argument('-n', '--dry-run', dest='dry_run',
                                default=False, action='store_true',
                                help='do not change repository')
-        subparser.add_argument('-i', '--inplace', dest='inplace',
+        subparser.add_argument('--inplace', dest='inplace',
                                default=False, action='store_true',
                                help="""rewrite repository in place, with no chance of going back to older
                                versions of the repository.""")