diff --git a/opposition.lyx b/opposition.lyx
index 78d2806..796a916 100644
--- a/opposition.lyx
+++ b/opposition.lyx
@@ -86,6 +86,10 @@ Richard Pannek
 \begin_inset Newline newline
 \end_inset
 
+Mattias Pettersson
+\begin_inset Newline newline
+\end_inset
+
 Niklas Landin
 \end_layout