--- a/utils/tonetool.1
+++ b/utils/tonetool.1
@@ -22,9 +22,9 @@
 tonetool \- create and manipulate telephony tones.
 .SH SYNOPSIS
 .B tonetool
-.I [options...]
+.RI [ options... ]
 .B command
-.IR [arguments...]
+.RI [ arguments... ]
 .SH DESCRIPTION
 Teltones is used to generate or play audio telephony tones based on a
 "spec".  The spec can be "dtmf digitstring" to create or play dtmf digits,