diff --git a/THANKS b/THANKS
index 559b025d8..fc9129f96 100644
--- a/THANKS
+++ b/THANKS
@@ -12,6 +12,7 @@ Jesse Thilo: jgt2@eecs.lehigh.edu
 Joakim Rosqvist: dvljrt@cs.umu.se
 Marcus Daniels: marcus@sysc.pdx.edu
 Mark A. Thomas: thommark@access.digex.net
+Mark Harris: mark@monitor.designacc.com
 Miles Bader: miles@gnu.ai.mit.edu
 Peter Eriksson: peter@ifm.liu.se
 Ross Ridge: rridge@calum.csclub.uwaterloo.ca