Possible Duplicate:
How to remove the self-reference of the ToC from the ToC?
I am using memoir with the article setting. For some reason my table of contents has a double "Contents" heading:

Why are there two, and how can I get just one?
Here is the code:
\documentclass[12pt, article]{memoir}
\usepackage{microtype}
\counterwithout{section}{chapter}
\setsecnumdepth{subsection}
\settocdepth{subsection}
\renewcommand*{\chaptitlefont}{\LARGE\centering}
\begin{document}
\chapter*{My article}
\begin{abstract}
Lorem Ipsum\ldots
\end{abstract}
\pagestyle{plain}
\tableofcontents
\section{Introduction}
\subsection{Subsection 1}
\end{document}