Last displayed glossary entry's hanging indentation gets lost with index style

Last displayed glossary entry's hanging indentation gets lost with index
style

I'm using the glossaries package in a document and use the index style
with it (because I need optional symbols to be displayed in the glossary).
The weird thing is that the last displayed item's hanging indentation gets
lost.
Here's a minimal example with only two items. What do I miss?
\documentclass{article}
\usepackage{glossaries}
\makeglossary
\newglossaryentry{GLO1}{name={GLO1},text={Glossary Entry
1},description={Some text. Some text. Some text. Some text. Some text.
Some text. Some text. Some text. Some text. Some text. Some text. Some
text. Some text. Some text. Some text. Some text. Some text. Some text. }}
\newglossaryentry{GLO2}{name={GLO2},text={Glossary Entry
2},description={Some other text. Some other text. Some other text. Some
other text. Some other text. Some other text. Some other text. Some other
text. Some other text. Some other text. Some other text. Some other text.
Some other text. Some other text. Some other text. Some other text. Some
other text. Some other text. Some other text }}
\begin{document}
\gls{GLO1}
\gls{GLO2}
\printglossary[style=index]
\end{document}

I'm using a quite recently installed (stable) texlive 2013 and compile
with pdflatex and makeglossaries.