diff --git a/presentation.pdf b/presentation.pdf
index e8d78dd..86e518b 100644
Binary files a/presentation.pdf and b/presentation.pdf differ
diff --git a/presentation.tex b/presentation.tex
index 1954911..20e55a0 100644
--- a/presentation.tex
+++ b/presentation.tex
@@ -190,8 +190,7 @@
 \appendix
 % \nocite{*}
 \section*{Quellen}
-% \begin{frame}[allowframebreaks,nosection]
-\begin{frame}[noframenumbering,plain,allowframebreaks]
+\begin{frame}[allowframebreaks]
   \frametitle{Quellen}
 
   \printbibliography[heading=none]{}