diff --git a/doc/doc_src/kendoc.tex b/doc/doc_src/kendoc.tex
index 76f1363..32b8178 100644
--- a/doc/doc_src/kendoc.tex
+++ b/doc/doc_src/kendoc.tex
@@ -150,8 +150,6 @@ The present documentation is a joint work between the second and third authors.
 \input {cstwdoc.tex}
 \input {emspdoc2.tex}
 \input {whithdoc.tex}
-%\begin{theindex}
-%\input kendoc.ind
-%\end{theindex}
+\addcontentsline{toc}{chapter}{Index}
 \printindex
 \end{document}