diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index 9f12cee0b..7e51aa3de 100644
--- a/doc/Guidebook.tex
+++ b/doc/Guidebook.tex
@@ -3980,33 +3980,33 @@ Example:
 
 %.lp
 \item[HACKDIR]
-{[}Not available on Unix{}]\\
+{[}Not available on Unix]\\
 Default location of files \textit{NetHack} needs. On Windows HACKDIR
 defaults to the location of the \textit{NetHack.exe} or \textit{NetHackw.exe} file
 so setting HACKDIR to override that is not usually necessary or recommended.
 %.lp
 \item[LEVELDIR]
-{[}Not available on Unix{}]\\
+{[}Not available on Unix]\\
 The location that in-progress level files are stored. Defaults to HACKDIR,
 must be writable.
 %.lp
 \item[SAVEDIR]
-{[}Not available on Unix{}]\\
+{[}Not available on Unix]\\
 The location where saved games are kept. Defaults to HACKDIR, must be
 writable.
 %.lp
 \item[BONESDIR]
-{[}Not available on Unix{}]\\
+{[}Not available on Unix]\\
 The location that bones files are kept. Defaults to HACKDIR, must be
 writable.
 %.lp
 \item[LOCKDIR]
-{[}Not available on Unix{}]\\
+{[}Not available on Unix]\\
 The location that file synchronization locks are stored. Defaults to
 HACKDIR, must be writable.
 %.lp
 \item[TROUBLEDIR]
-{[}Not available on Unix{}]\\
+{[}Not available on Unix]\\
 The location that a record of game aborts and self-diagnosed game problems
 is kept. Defaults to HACKDIR, must be writable.
 %