diff --git a/Doc/lib/libdifflib.tex b/Doc/lib/libdifflib.tex
index 5e3c4ad..ce191c0 100644
--- a/Doc/lib/libdifflib.tex
+++ b/Doc/lib/libdifflib.tex
@@ -58,7 +58,7 @@
   \class{SequenceMatcher} is quadratic time for the worst case and has
   expected-case behavior dependent in a complicated way on how many
   elements the sequences have in common; best case time is linear.
-\end{classdesc}
+\end{classdesc*}
 
 
 \begin{seealso}
diff --git a/Doc/lib/libzipfile.tex b/Doc/lib/libzipfile.tex
index 6d7ba1e..9f0930f 100644
--- a/Doc/lib/libzipfile.tex
+++ b/Doc/lib/libzipfile.tex
@@ -29,11 +29,11 @@
   The class for reading and writing ZIP files.  See
   ``\citetitle{ZipFile Objects}'' (section \ref{zipfile-objects}) for
   constructor details.
-\end{classdesc}
+\end{classdesc*}
 
 \begin{classdesc*}{PyZipFile}
   Class for creating ZIP archives containing Python libraries.
-\end{classdesc}
+\end{classdesc*}
 
 \begin{classdesc}{ZipInfo}{\optional{filename\optional{, date_time}}}
   Class used the represent infomation about a member of an archive.