diff --git a/sbin/comcontrol/comcontrol.8 b/sbin/comcontrol/comcontrol.8
index eec9520db62f..53d7d332afdc 100644
--- a/sbin/comcontrol/comcontrol.8
+++ b/sbin/comcontrol/comcontrol.8
@@ -32,7 +32,7 @@ is to put invocations of it in the
 .Ar /etc/rc.local
 startup script.
 .Sh SEE ALSO
-.Xr sio 4
+.Xr sio 4 ,
 .Xr stty 1 .
 .Sh FILES
 .Bl -tag -width Pa
diff --git a/sbin/i386/comcontrol/comcontrol.8 b/sbin/i386/comcontrol/comcontrol.8
index eec9520db62f..53d7d332afdc 100644
--- a/sbin/i386/comcontrol/comcontrol.8
+++ b/sbin/i386/comcontrol/comcontrol.8
@@ -32,7 +32,7 @@ is to put invocations of it in the
 .Ar /etc/rc.local
 startup script.
 .Sh SEE ALSO
-.Xr sio 4
+.Xr sio 4 ,
 .Xr stty 1 .
 .Sh FILES
 .Bl -tag -width Pa