diff --git a/example/mu/example.dtx b/example/mu/example.dtx
index 40dd9362d894a66b71c18ef8abb7b0a603a3d0a6..63b76a5416518d93e2eaa87f65f06d0f94991a21 100644
--- a/example/mu/example.dtx
+++ b/example/mu/example.dtx
@@ -570,7 +570,9 @@ proofs.
     %% at 4 Ă— 4 cm should be 1000 Ă— 1000 px large or larger.
     \includegraphics[width=4cm]{fithesis/logo/mu/fithesis-base.pdf}
   \end{center}
+%<*econ>
   \emph{Source: <<Image Source>>}
+%</econ>
   \caption{The logo of the Masaryk University at 40\,mm}
   \label{fig:mulogo1}
 \end{figure}
@@ -585,7 +587,9 @@ proofs.
       \includegraphics[width=\textwidth]{fithesis/logo/mu/fithesis-base.pdf}
     \end{minipage}
   \end{center}
+%<*econ>
   \emph{Source: <<Image Source>>}
+%</econ>
   \caption{The logo of the Masaryk University at $\frac23$ and
     $\frac13$ of text width}
   \label{fig:mulogo2}
@@ -605,7 +609,9 @@ proofs.
     morning. \\
     \bottomrule
   \end{tabularx}
+%<*econ>
   \vskip\abovecaptionskip\emph{Source: <<Table Source>>}
+%</econ>
   \caption{A weather forecast}
   \label{tab:weather}
 \end{table}