diff --git a/I1620/i1620_defs.h b/I1620/i1620_defs.h
index d03e2cc1..7db8cb97 100644
--- a/I1620/i1620_defs.h
+++ b/I1620/i1620_defs.h
@@ -240,7 +240,7 @@ enum opcodes {
 
 #define DEV_DEFIO       (1 << (DEV_V_UF + 0))
 
-#define DEFIO_CPS       u4                  /* Default Characters per Second field */
+#define DEFIO_CPS       u4                  /* Characters per Second field */
 #define DEFIO_ACTIVATE(uptr) ((uptr)->DEFIO_CPS) ? sim_activate_after (uptr, 1000000/(uptr)->DEFIO_CPS) : sim_activate (uptr, (uptr)->wait)
 #define DEFIO_ACTIVATE_ABS(uptr) ((uptr)->DEFIO_CPS) ? sim_activate_after_abs (uptr, 1000000/(uptr)->DEFIO_CPS) : sim_activate_abs (uptr, (uptr)->wait)