diff --git a/chapters/operatorsandexpressions.tex b/chapters/operatorsandexpressions.tex
index c41a93e7d..8a17bdeb8 100644
--- a/chapters/operatorsandexpressions.tex
+++ b/chapters/operatorsandexpressions.tex
@@ -986,7 +986,7 @@ \subsubsection{homotopy}\doublelabel{homotopy}
 \end{lstlisting}
 \end{example}
 
-\begin{example}[4] Note that \lstinline!homotopy! \textbf{shall not} be used to
+\begin{example}[4] Note that \lstinline!homotopy! \emph{shall not} be used to
 combine unrelated expressions, since this can generate singular systems
 from combining two well-defined systems.
 \begin{lstlisting}[language=modelica]