diff --git a/Misc/ACKS b/Misc/ACKS
index d419b7e2e60..2e8818a54b0 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -433,6 +433,7 @@ Luc Lefebvre
 Vincent Legoll
 Kip Lehman
 Joerg Lehmann
+Robert Lehmann
 Luke Kenneth Casson Leighton
 Marc-Andre Lemburg
 John Lenton