diff --git a/presentation/backtrace.tex b/presentation/backtrace.tex
index ce4d29b..5d7079e 100644
--- a/presentation/backtrace.tex
+++ b/presentation/backtrace.tex
@@ -461,6 +461,7 @@ \subsection{One advantage of raising with debugging information}
 
 
 \subsection{The multiple kinds of raise}
+\frameSubsection{}{}
 
 \begin{frame}{Backtraces}{When backtraces are not needed}
   \begin{columns}[c]