diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index d1128e967..b3c175766 100644
--- a/doc/Guidebook.tex
+++ b/doc/Guidebook.tex
@@ -3036,7 +3036,7 @@ See the ``Modifying {\it NetHack\/} Symbols'' section.
 Example:
 %.sd
 \begin{verbatim}
-   # replaces small punctuation (tick marks) with digits
+   # replace small punctuation (tick marks) with digits
    SYMBOLS=S_boulder:0,S_golem:7
 \end{verbatim}
 %.ed