diff --git a/bin/pattyd.8 b/bin/pattyd.8
index 0a458d7..4a29a6a 100644
--- a/bin/pattyd.8
+++ b/bin/pattyd.8
@@ -9,7 +9,7 @@
 .Op Fl f
 .Op Fl c Ar pattyd.conf
 .Nm
-.Fl s Ar patty.sock MYCALL /dev/ttyXYZ Op tioargs ...
+.Fl s Ar patty.sock MYCALL /dev/ttyXYZ Op tioarg ...
 .Sh DESCRIPTION
 .Nm
 provides an AX.25 userland stack daemon which can be used to communicate with
@@ -39,7 +39,7 @@ Run daemon in foreground.
 Specify a configuration file to load.  When this option is not specified, the
 default configuration file is
 .Pa /etc/patty/pattyd.conf .
-.It Fl s Ar patty.sock MYCALL /dev/ttyXYZ Op tioargs ...
+.It Fl s Ar patty.sock MYCALL /dev/ttyXYZ Op tioarg ...
 Run in standalone mode, without requiring a configuration file.  In this mode,
 a single interface,
 .Li kiss0 ,
@@ -48,7 +48,7 @@ is created, with address
 using
 .Ar /dev/ttyXYZ
 as a KISS interface, and zero or more optional
-.Op tioargs ...
+.Op tioarg ...
 given to specify baud rate or flow control.  Valid settings are:
 .Li 1200 , 9600 , crtscts , xonxoff .
 .El
diff --git a/bin/pattyd.c b/bin/pattyd.c
index b8bc06b..bb326d5 100644
--- a/bin/pattyd.c
+++ b/bin/pattyd.c
@@ -29,7 +29,7 @@ static int usage(int argc, char **argv, const char *message, ...) {
     }
 
     fprintf(stderr, "usage: %s [-f] [-c pattyd.conf]\n"
-                    "       %s [-f] -s patty.sock MYCALL /dev/ttyXYZ [tioflags ...]\n",
+                    "       %s [-f] -s patty.sock MYCALL /dev/ttyXYZ [tioarg ...]\n",
         argv[0], argv[0]);
 
     return EX_USAGE;