Using \dot{x} produces a bar below the letter

I'm trying to put a dot above some letters (as in derivatives wrt time), and I know that this is achieved by \dot{x}, \ddot{x}, etc. In one of my texts it worked neatly, and in the one I'm writing now it produces a bar under the letters. I tried comparing the preambles, but I didn't find anything that different.

For example:

\documentclass{article}

\usepackage{gfsartemisia-euler}

\begin{document}
$\dot{a}, \quad \dot{b}, \quad \dot{c}$
\end{document}


Gives:

I would say that there's some incompatibilty with the gfsartemisia font, but the other text I said it worked also uses that font. How can I fix that?

Based on an answer to a similar question (Unable to show a derivative with \dot in gfsartemisia-euler font (inside TikZ figure)):

\documentclass{article}

\usepackage{gfsartemisia-euler}
\usepackage[T1]{fontenc}
\DeclareMathAccent{\dot}{\mathalpha}{artemisiaeulernumbers}{"01}

\begin{document}
$\dot{a}, \quad \dot{b}, \quad \dot{c}$
\end{document}

• This works, thanks. Also thanks for pointing the similar question too. – Ivo Terek Nov 8 '15 at 1:05