diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index 3e70e355c..ca25f2249 100644
--- a/doc/Guidebook.tex
+++ b/doc/Guidebook.tex
@@ -3911,7 +3911,7 @@ something pushes the old item into your alternate weapon slot (default off).
 Likewise for the `a' (apply) command if it causes the applied item to
 become wielded.  Persistent.
 %.lp
-\item[\ib(quick\verb+_+farsight)]
+\item[\ib{quick\verb+_+farsight}]
 When set, usually prevents the ``you sense your surroundings'' message
 where play pauses to allow you to browse the map whenever clairvoyance
 randomly activates.