# Overfull warning when using longtable

I am getting overfull warning (Overfull \hbox (17.10379pt too wide) in alignment) when using longtable enviroment (See MWE below) The warnings are on \begin{longtable} and \end* lines. The pdf filellooks fine, but I would like to get rid of the warning message. Any suggestions on how to get rid of those warning by formatting the table?

\documentclass{article}

\usepackage{longtable}
\usepackage{lipsum}

\begin{document}
\begin{longtable}{*2{p{0.49\textwidth}}}
Title & Column 2 \\
\hline
Title & Column 2 \\
\hline
\multicolumn{2}{r}{Continued}\\
\endfoot
\hline
\endlastfoot

\lipsum[1] & \lipsum[2]\\
\end{longtable}
\end{document}

• Welcome. Load the package showframe and you will see the problem. The width of a column is .49\textwidth but you forgot the tabcolsep on the left and right of every column. – Marco Daniel Jan 28 '12 at 18:12
• thank you. I did not konw about showframe. I fixed the column width and now it works fine. – mythealias Jan 28 '12 at 18:17

You're not taking correctly into account the \tabcolsep, a space that is added in front and after all columns:
\begin{longtable}{*2{p{\dimexpr0.5\textwidth-2\tabcolsep\relax}}}

Or, with the calc package,
\begin{longtable}{*2{p{0.5\textwidth-2\tabcolsep}}}