Warning "Command \@makecol has changed."

Warning "Command \@makecol has changed."

When I compile my documment I get the following warning Command \@makecol
has changed.
TexStudio points to the file footmisc.sty. Of course I've tried to install
its latest version (2011/06/06 v5.5b) but still have the problem :(
MWE:
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{fancyhdr}
\usepackage[bottom,hang]{footmisc}
\usepackage[T1]{fontenc}
\begin{document}
mediante DHCP\footnote{Se puede obtener más información sobre esta
utilidad en el documento anexo Guía de usuario de Xen: Instalación,
configuración y primeros pasos}
\end{document}
I've seen that by reordering the fancyhdr and footmisc sentences the
warning doesn't occur, but still not sure if with that there's no error or
it's just that fancyhdr doesn't check well.