diff --git a/chapters/classes.tex b/chapters/classes.tex
index 471417966..c63b4f52c 100644
--- a/chapters/classes.tex
+++ b/chapters/classes.tex
@@ -391,7 +391,7 @@ \subsection{Component Variability Prefixes discrete, parameter, constant}\label{
 \begin{lstlisting}[language=modelica]
 model PiecewiseConstantReals
   discrete Real xd1 "Must be assigned in a when-clause, discrete-time";
-  Real xd2 "Assigned in a \lstinline!when!-clause (below) and thus discrete-time";
+  Real xd2 "Assigned in a when-clause (below) and thus discrete-time";
   Real xc3 "Not discrete-time, but piecewise constant";
   Real x4 "Piecewise constant, but changes between events";
 equation