diff --git a/pw.1 b/pw.1
index 0a51a07..e207adb 100644
--- a/pw.1
+++ b/pw.1
@@ -38,6 +38,9 @@ Allow lower case letters.
 Allow upper case letters.
 .It Fl s, \-symbol
 Allow symbols and punctuation form the following list: _-=+<>,.!@#$%^&*.
+.It Fl c Ar length
+Specify the password length.
+Default is 24 characters.
 .El
 .\" .Sh CONTEXT
 .\" For section 9 functions only.