diff --git a/src/borg/archiver/mount_cmds.py b/src/borg/archiver/mount_cmds.py
index 0ec56731f..f6d5fca2c 100644
--- a/src/borg/archiver/mount_cmds.py
+++ b/src/borg/archiver/mount_cmds.py
@@ -120,7 +120,7 @@ def build_parser_mount_umount(self, subparsers, common_parser, mid_common_parser
         Unmounting in these cases could cause an active rsync or similar process
         to delete data unintentionally.
 
-        When running in the foreground ^C/SIGINT unmounts clean, but other
+        When running in the foreground ^C/SIGINT unmounts cleanly, but other
         signals or crashes do not.
         """
         )