diff --git a/demo/demo.tex b/demo/demo.tex
index 05128cb..e466991 100644
--- a/demo/demo.tex
+++ b/demo/demo.tex
@@ -290,7 +290,7 @@ or show \textbf{bold} results.\end{verbatim}
 }
 
 \begin{frame}{References}
-  Some references to showcase [allowframebreaks] \cite{knuth92,ConcreteMath,Simpson,Er01,greenwade93}
+  Some references to showcase [allowframebreaks] \cite{Knuth92,ConcreteMath,Simpson,Er01,greenwade93}
 \end{frame}
 
 \section{Conclusion}