diff --git a/src/mame/drivers/tispeak.cpp b/src/mame/drivers/tispeak.cpp
index 384d2c04016..292f755c5ac 100644
--- a/src/mame/drivers/tispeak.cpp
+++ b/src/mame/drivers/tispeak.cpp
@@ -1,6 +1,6 @@
 // license:BSD-3-Clause
 // copyright-holders:hap, Jonathan Gevaryahu, Sean Riddle
-// thanks-to:David Viens
+// thanks-to:David Viens, Kevin Horton
 /***************************************************************************
 
   ** subclass of hh_tms1k_state (includes/hh_tms1k.h, drivers/hh_tms1k.cpp) **