diff --git a/manual/presentation.tex b/manual/presentation.tex
index a76a1c00b..cad9e9f15 100644
--- a/manual/presentation.tex
+++ b/manual/presentation.tex
@@ -102,7 +102,7 @@
 \titlepage
 \end{frame}
 
-\setcounter{section}{-2}
+\setcounter{section}{-3}
 
 \section{Abstract}
 \begin{frame}{Abstract}