diff --git a/dis6502.1 b/dis6502.1
index 76ee388..45e1982 100644
--- a/dis6502.1
+++ b/dis6502.1
@@ -27,8 +27,9 @@ headers.  The dump routine then prints out the information.
 .PP
 The command line options are:
 .TP
-.I \-r
-Raw binary input file.
+.I \-r \fIaddress\fP
+Raw binary input file, with the first byte of the file being associated with
+the specified address.
 .TP
 .I \-b
 Atari boot format input file.