# fancyhead not in small caps

The text in my fancyhead is written in small caps. I would like to have it not in small caps. How can I do?

\usepackage{fancyhdr}
\pagestyle{fancy}

something like that:

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To get a format similar to the one in the example page, you can do like this:

\documentclass[a4paper]{book}
\usepackage{fancyhdr}

\pagestyle{fancy}

\makeatletter
\DeclareRobustCommand{\format@sec@number}[2]{{\normalfont\upshape#1}#2}
\renewcommand{\chaptermark}[1]{%
\markboth{\format@sec@number{\ifnum\c@secnumdepth>\m@ne\@chapapp\ \thechapter. \fi}{#1}}{}}
\renewcommand{\sectionmark}[1]{%
\markright{\format@sec@number{\ifnum\c@secnumdepth>\z@\thesection. \fi}{#1}}}
\makeatother

\fancyhf{}

I assume two-sided printing. Here are the header for an even and an odd page.

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Use \nouppercase:

\usepackage{fancyhdr}
\pagestyle{fancy}

I prefer the use of \itshape over \sl and \rmfamily over \rm

\usepackage{lipsum,fancyhdr}