diff --git a/sim_console.c b/sim_console.c
index 43208219..e14786da 100644
--- a/sim_console.c
+++ b/sim_console.c
@@ -2240,11 +2240,13 @@ if (r != SCPE_OK)
 sim_deb_switches = sim_switches;                        /* save debug switches */
 if (sim_deb_switches & SWMASK ('R')) {
     struct tm loc_tm, gmt_tm;
+    time_t time_t_now;
 
     clock_gettime(CLOCK_REALTIME, &sim_deb_basetime);
+    time_t_now = (time_t)sim_deb_basetime.tv_sec;
     /* Adjust the relative timebase to reflect the localtime GMT offset */
-    loc_tm = *localtime (&sim_deb_basetime.tv_sec);
-    gmt_tm = *gmtime (&sim_deb_basetime.tv_sec);
+    loc_tm = *localtime (&time_t_now);
+    gmt_tm = *gmtime (&time_t_now);
     sim_deb_basetime.tv_sec -= mktime (&gmt_tm) - mktime (&loc_tm);
     if (!(sim_deb_switches & (SWMASK ('A') | SWMASK ('T'))))
         sim_deb_switches |= SWMASK ('T');