More \exception fixes.
diff --git a/Doc/lib/libossaudiodev.tex b/Doc/lib/libossaudiodev.tex
index ec79e9e..223cf28 100644
--- a/Doc/lib/libossaudiodev.tex
+++ b/Doc/lib/libossaudiodev.tex
@@ -311,7 +311,7 @@
\begin{methoddesc}[mixer device]{close}{}
This method closes the open mixer device file. Any further attempts to
-use the mixer after this file is closed will raise an IOError.
+use the mixer after this file is closed will raise an \exception{IOError}.
\end{methoddesc}
\begin{methoddesc}[mixer device]{fileno}{}