diff --git a/doc/ack.texi b/doc/ack.texi
index 52a530154..5d5916da5 100644
--- a/doc/ack.texi
+++ b/doc/ack.texi
@@ -81,6 +81,7 @@ Bugfixes, documentation, encouragement, and code has been contributed by:
 @item Roman Divacky
 @item Sho Hosoda, 細田 将
 @item Stefan Metzmacher
+@item Ted Percival
 @item Victor Guerra
 @item Zeqing Xia
 @item Åke Sandgren