diff --git a/README.md b/README.md
index 33d1c35..c5cd0ef 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ optional arguments:
   -w N, --weekly N      keep N weekly backups, default: 4
   -m N, --monthly N     keep N monthly backups, default: 3
   --day-of-week N       day of week for weekly backups, 0 for monday, 6 for sunday, default: 0
-  --day-of-month N      day of month for monthly backups, dafault: 1
+  --day-of-month N      day of month for monthly backups, default: 1
   -f, --force           suppress remove confirmation
   -r, --recursive       remove files recursively
   -t FORMAT, --timestamp-format FORMAT
diff --git a/clean-backups.py b/clean-backups.py
index 0d666a2..143b80a 100755
--- a/clean-backups.py
+++ b/clean-backups.py
@@ -204,7 +204,7 @@ parser.add_argument(
     type=int,
     default=DEFAULT_DAY_OF_MONTH,
     metavar="N",
-    help=f"day of month for monthly backups, dafault: {DEFAULT_DAY_OF_MONTH}"
+    help=f"day of month for monthly backups, default: {DEFAULT_DAY_OF_MONTH}"
 )
 # force removal
 parser.add_argument(