diff --git a/slides-2021-06-02.tex b/slides-2021-06-02.tex
index 5ad125d..6501301 100644
--- a/slides-2021-06-02.tex
+++ b/slides-2021-06-02.tex
@@ -10,12 +10,10 @@
 \usepackage{minted}
 \usetikzlibrary{shapes.geometric,arrows,positioning}
 
-\usefonttheme{serif}
 \definecolor{vulightgrey}{RGB}{220,220,220}
 \definecolor{vudarkgrey}{RGB}{65,65,65}
 \definecolor{vupurple}{RGB}{123,0,63}
 \definecolor{darkgreen}{RGB}{32,96,32}
-
 \setbeamercolor{title}{fg=vupurple}
 \setbeamercolor{frametitle}{fg=vupurple}
 \setbeamercolor{abstract title}{fg=vupurple}
@@ -24,6 +22,8 @@
 \setbeamercolor{navigation symbols}{fg=vulightgrey}
 \setbeamercolor{normal text}{fg=vudarkgrey}
 
+\usefonttheme{serif}
+
 \newcommand{\DP}{Douglas \& Peucker}
 \newcommand{\VW}{Visvalingam--Whyatt}
 \newcommand{\WM}{Wang--M{\"u}ller}