diff --git a/slides/viva.tex b/slides/viva.tex
index 034e36e..0aa0531 100644
--- a/slides/viva.tex
+++ b/slides/viva.tex
@@ -137,7 +137,7 @@
   handlers.\\[2em]
 
   \[
-    \Scale[2]{\cek{C \mid E \mid K = \overline{((H,E), \sigma)}}}
+    \Scale[2]{\cek{C \mid E \mid K = \overline{(\sigma, (H,E))}}}
   \]\\[2em]
 
   \textbf{Relevant papers} TyDe'16~\cite{HillerstromL16},