diff --git a/unexpand.1 b/unexpand.1
index 62dd957..21ebbb2 100644
--- a/unexpand.1
+++ b/unexpand.1
@@ -1,25 +1,28 @@
-.TH EXPAND 1 sbase\-VERSION
-.SH NAME
-unexpand \- convert blanks to tabs
-.SH SYNOPSIS
-.B unexpand
-.RB [ \-a ]
-.RB [ \-t
-.IR n ]
-.RI [ file ...]
-.SH DESCRIPTION
-unexpand processes the named files or the standard input, writing the
+.Dd January 30, 2015
+.Dt UNEXPAND 1 sbase\-VERSION
+.Os
+.Sh NAME
+.Nm unexpand
+.Nd convert blanks to tabs
+.Sh SYNOPSIS
+.Nm
+.Op Fl a
+.Op Fl t Ar n
+.Op Ar file ...
+.Sh DESCRIPTION
+.Nm
+processes the named files or the standard input, writing the
 standard output with consecutive blanks (spaces and tabs) converted
 into tabs. Backspace characters are preserved into the output and
 decrement the column count for tab calculations.
-.SH OPTIONS
-.TP
-.BI \-a
+.Sh OPTIONS
+.Bl -tag -width Ds
+.It Fl a
 convert blanks to tabs everywhere, not just at the start of lines
-.TP
-.BI \-t " n"
+.It Fl t Ar n
 set tab size to
-.I n
+.Ar n
 spaces (default: 8)
-.SH SEE ALSO
-.IR expand (1)
+.El
+.Sh SEE ALSO
+.Xr expand 1