diff --git a/master.pdf b/master.pdf
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diff --git a/master.tex b/master.tex
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--- a/master.tex
+++ b/master.tex
@@ -197,6 +197,7 @@
         \centering
         \includegraphics[width=0.95\textwidth]{img/elab/ts01.png}
     \end{figure}
+    \blfootnote{Abbildung: Wikimedia Commons; CC BY-SA 4.0 \faCreativeCommons~\faCreativeCommonsBy~\faCreativeCommonsSa\hspace{1em}}
 \end{frame}
 
 \begin{frame}