doc: more escapes for minuses

diff --git a/extensions/libxt_DNETMAP.man b/extensions/libxt_DNETMAP.man
index aa500e748ad0034daae01e2d3e5883130138d1db..989792dafe212fe4a0e894f20e6107e72652b89b 100644 (file)
--- a/extensions/libxt_DNETMAP.man
+++ b/extensions/libxt_DNETMAP.man
@@ -59,7 +59,7 @@ Adds static binding between prenatIP nad postnatIP. If postnatIP is already
 bound, previous binding will be timedout immediatelly. Static binding is never
 timedout.
 .TP
-echo "-\fIIP\fR" > \fB/proc/net/xt_DNETMAP/subnet_mask\fR
+echo "\-\fIIP\fR" > \fB/proc/net/xt_DNETMAP/subnet_mask\fR
 Removes binding with \fIIP\fR as prenat or postnat address. If removed binding
 is currently static, it'll make entry available for dynamic allocation.
 .TP