diff --git a/ptouch-print.1 b/ptouch-print.1
index 99aa29d..fb55623 100644
--- a/ptouch-print.1
+++ b/ptouch-print.1
@@ -37,6 +37,9 @@ to use the mechanical cutter.
 
 .SS "Font selection options"
 .TP
+.BR \-\-fontmargin\  \fI<size>
+When auto-detecting font size account for a margin above and below the text.
+.TP
 .BR \-\-fontsize\  \fI<size>
 Disable auto-detection of the font size and force the font size to the size
 given as argument. Please note that text will be cut off if you specify a