# Strange character when using listings package

I'm seeing an odd character like a very flat U, where there should be a space, with the listings package. See example below. Does anyone have any idea why this is happening, or how to get rid or work around it?

\documentclass{standalone}
\usepackage{underscore}
\usepackage{listings}
\usepackage[usenames,dvipsnames, rgb, svgnames, x11names]{xcolor}
% Text layout
\topmargin 0.0cm
\oddsidemargin 0.5cm
\evensidemargin 0.5cm
\textwidth 16cm
\textheight 21cm
\lstnewenvironment{cmd}[1][]{%
\lstset{language=sh, backgroundcolor=\color{LightSteelBlue1}, #1}}
{}

\begin{document}
\begin{cmd}[caption=Configuration file section including filters]
[affy6]
[...]
[[hapmap]]
phenofiles = "data/Hapmap6.0/Pheno/hapmappheno_909.csv",
genofile = "/data/snppy/Hapmap6.0/Geno/birdseed-v2.calls.txt"
anno_filter = "chromosome = 5"
some_other_stuff = "foo = bar"
\end{cmd}
\end{document}

-
Please try to load \usepackage[T1]{fontenc} and maybe the font berano or so –  Marco Daniel May 3 '12 at 6:18
@MarcoDaniel: Why? –  Faheem Mitha May 3 '12 at 14:38