diff --git a/README.md b/README.md
index ee0adbb3..5de7c365 100644
--- a/README.md
+++ b/README.md
@@ -121,6 +121,7 @@ Special thanks to the following persons and companies who made generous donation
 * Charles-Henri Hallard  * Martijn van den Burg
 * Martijn van den Burg  * Nick Koumaris
 * Nick Koumaris  +* Jon Williams
+* Jon Williams  ---
 
 ---