# biblatex: title won't show up correctly

I use biblatex and biber to include a bibliography based on a .bib-file. I print the title in the bibliography based on the biblatex-instruction \printfield{title}. Unfortunatley, the title shows up incorrectly sometimes. A few examples: - title = {ECU firmware} in the .bib-file results in ECU rmware - title = {Nice temperature of 25°C} results in Nice temperature of 25C

In the biblatex-documentation I found:

\printfield[hformati]{hfieldi}

This command prints a hfieldi using the formatting directive hformati , as defined with \DeclareFieldFormat . ...

So ist the formatting directive for the title field the problem? Can I change it in order to get the expected result?

Here is MWE:

\documentclass{article}

\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[backend=biber,style=alphabetic]{biblatex}
\usepackage{csquotes}
\usepackage{filecontents}

\begin{filecontents*}{bibfile.bib}
@newtype{xxx,
title   = {ECU ﬁrmware},
author  = {author1},
}
\end{filecontents*}

\DeclareBibliographyDriver{newtype}{
\usebibmacro{begentry}
\printnames{author}
\newunit\newblock
\printfield{title}
\usebibmacro{finentry}
}

\begin{document}
See~\cite{xxx}

\printbibliography
\end{document}


results in:

• Can you give us a MWE? Aug 12, 2016 at 12:55
• The problem is, that ﬁ is not written as individual letters in your bib file, but as a ligature, a composed letter. Delete it and retype fi Aug 12, 2016 at 13:42
• I guess the same holds true for the missing degree sign. Delete it and replace it with and appropriate tex syntax (a quick hack being $^\circ$, but there are better ways). Aug 12, 2016 at 13:44
• You may can use \textcelsius instead of °C
– SeRe
Aug 12, 2016 at 13:45

this pretty much already tells the solution. There seems to be a character, which is not suitable as input for the bibliography, more precisely the glyph ﬁ which represents a ligature of f and i. To solve this simply delete the symbol and retype f and i as individual letters.