diff --git a/VAX/vax750_stddev.c b/VAX/vax750_stddev.c
index dd3c6d65..47afa3fd 100644
--- a/VAX/vax750_stddev.c
+++ b/VAX/vax750_stddev.c
@@ -536,7 +536,7 @@ t_stat tti_svc (UNIT *uptr)
 {
 int32 c;
 
-sim_clock_coschedule (uptr, TMXR_MULT);                 /* continue poll */
+sim_clock_coschedule (uptr, tmxr_poll);                 /* continue poll */
 
 if ((tti_csr & CSR_DONE) &&                             /* input still pending and < 500ms? */
     ((sim_os_msec () - tti_buftime) < 500))
diff --git a/VAX/vax860_stddev.c b/VAX/vax860_stddev.c
index 8e84b53b..20ae179f 100644
--- a/VAX/vax860_stddev.c
+++ b/VAX/vax860_stddev.c
@@ -615,7 +615,7 @@ int32 line = uptr - tti_dev.units;
 switch (line) {
 
     case ID_CT:                                         /* console terminal */
-        sim_clock_coschedule (uptr, TMXR_MULT);         /* continue poll */
+        sim_clock_coschedule (uptr, tmxr_poll);         /* continue poll */
         if ((tti_csr & CSR_DONE) &&                     /* input still pending and < 500ms? */
             ((sim_os_msec () - tti_buftime) < 500))
              return SCPE_OK;