Resolve the issue “headheight too low”

Warning “headheight too low”

In case the title for a section or chapter is too long to be printed in one line in the header, you may encounter the following warning:

Package scrlayer-scrpage Warning: \headheight to low.

Identifying the cause

In your log file, look around where the issue appears. Before and after the Warning there are bracketed numbers, like [65] [66] which indicate the page number that LaTeX has just output. The offending title appears somewhere around these pages. Check your PDF output to find the actual sections or chapters.

Resolving this issue in an edited volume

If this issue appears while working on an edited volume, it can only occur in the title of a paper in this volume. Please go to the meta data of the paper with the issue and insert an optional argument to \title:

\title[Short title]{Original title}

The Short title will only be used for the header. The full title will be used elsewhere, including the table of contents.

Resolving the issue in a monograph

In a monograph the issue may appear in any sectioning element, such as a chapter, a section or a subsection. Please identify the respective sectioning command and insert the optional argument [head=Short title], e.g.

\chapter[head=Short title]{Original title}
\section[head=Short title]{Original title}
\subsection[head=Short title]{Original title}