diff --git a/src/borg/archiver/_common.py b/src/borg/archiver/_common.py
index 8daaeadcd..f1d33ec80 100644
--- a/src/borg/archiver/_common.py
+++ b/src/borg/archiver/_common.py
@@ -9,6 +9,7 @@
 from ..cache import Cache, assert_secure
 from ..helpers import Error
 from ..helpers import SortBySpec, positive_int_validator, location_validator, Location, relative_time_marker_validator
+from ..helpers import Highlander
 from ..helpers.nanorst import rst_to_terminal
 from ..manifest import Manifest, AI_HUMAN_SORT_KEYS
 from ..patterns import PatternMatcher
@@ -246,20 +247,6 @@ def wrapper(self, args, repository, manifest, **kwargs):
     return wrapper
 
 
-class Highlander(argparse.Action):
-    """make sure some option is only given once"""
-
-    def __init__(self, *args, **kwargs):
-        self.__called = False
-        super().__init__(*args, **kwargs)
-
-    def __call__(self, parser, namespace, values, option_string=None):
-        if self.__called:
-            raise argparse.ArgumentError(self, "There can be only one.")
-        self.__called = True
-        setattr(namespace, self.dest, values)
-
-
 # You can use :ref:`xyz` in the following usage pages. However, for plain-text view,
 # e.g. through "borg ... --help", define a substitution for the reference here.
 # It will replace the entire :ref:`foo` verbatim.
diff --git a/src/borg/archiver/create_cmd.py b/src/borg/archiver/create_cmd.py
index a791b091f..284a7a0c6 100644
--- a/src/borg/archiver/create_cmd.py
+++ b/src/borg/archiver/create_cmd.py
@@ -767,7 +767,7 @@ def build_parser_create(self, subparsers, common_parser, mid_common_parser):
             metavar="NAME",
             dest="stdin_name",
             default="stdin",
-            action=MakePathSafeAction,  # MakePathSafeAction maybe should subclass from Highlander.
+            action=MakePathSafeAction,
             help="use NAME in archive for stdin data (default: %(default)r)",
         )
         subparser.add_argument(
diff --git a/src/borg/helpers/__init__.py b/src/borg/helpers/__init__.py
index 7a83a44d8..7556af23a 100644
--- a/src/borg/helpers/__init__.py
+++ b/src/borg/helpers/__init__.py
@@ -31,7 +31,7 @@
 from .parseformat import BaseFormatter, ArchiveFormatter, ItemFormatter, file_status
 from .parseformat import swidth_slice, ellipsis_truncate
 from .parseformat import BorgJsonEncoder, basic_json_data, json_print, json_dump, prepare_dump_dict
-from .parseformat import MakePathSafeAction
+from .parseformat import Highlander, MakePathSafeAction
 from .process import daemonize, daemonizing
 from .process import signal_handler, raising_signal_handler, sig_int, ignore_sigint, SigHup, SigTerm
 from .process import popen_with_error_handling, is_terminal, prepare_subprocess_env, create_filter_process
diff --git a/src/borg/helpers/parseformat.py b/src/borg/helpers/parseformat.py
index ede705477..e69e514bb 100644
--- a/src/borg/helpers/parseformat.py
+++ b/src/borg/helpers/parseformat.py
@@ -1149,7 +1149,21 @@ def decode(d):
     return decode(d)
 
 
-class MakePathSafeAction(argparse.Action):
+class Highlander(argparse.Action):
+    """make sure some option is only given once"""
+
+    def __init__(self, *args, **kwargs):
+        self.__called = False
+        super().__init__(*args, **kwargs)
+
+    def __call__(self, parser, namespace, values, option_string=None):
+        if self.__called:
+            raise argparse.ArgumentError(self, "There can be only one.")
+        self.__called = True
+        setattr(namespace, self.dest, values)
+
+
+class MakePathSafeAction(Highlander):
     def __call__(self, parser, namespace, path, option_string=None):
         try:
             sanitized_path = make_path_safe(path)