diff --git a/THANKS b/THANKS
index 37f851238..7d2ef836a 100644
--- a/THANKS
+++ b/THANKS
@@ -377,6 +377,7 @@ Pawel Prokop                        pablo@wizard.ae.krakow.pl
 Per Cederqvist                      ceder@lysator.liu.se
 Per Kristian Hove                   perhov@math.ntnu.no
 Peter Eriksson                      peter@ifm.liu.se
+Peter Fales                         psfales@lucent.com
 Peter Horst                         peter@ointment.org
 Peter Moulder                       reiter@netspace.net.au
 Peter Samuelson                     psamuels@sampo.creighton.edu