\chaptermark undefined

[tobiasv]

I've a problem with a LaTeX header. I'm using TeXnicCenter. The following error occured.

Error: !LaTeX Error: \chaptermark undefined
1.155 \renewcommand{\chaptermark}
[1]{\markboth{\MakeUppercase{#...


The code at these lines is postet below:

\renewcommand{\chaptermark}[1]{\markboth{\thechapter. \MakeUppercase{#1}}{}}
\renewcommand{\chaptermark}[1]{\markboth{\MakeUppercase{#1}}{}}

[lockstep]

Because you didn't provide a minimal example, I'll hazard a guess: You are using a document class without the \chapter command (article, scrartcl, ...).

lockstep