diff --git a/main/stdtime/localtime.c b/main/stdtime/localtime.c
index 1922e4a22d..16274c8ece 100644
--- a/main/stdtime/localtime.c
+++ b/main/stdtime/localtime.c
@@ -1133,6 +1133,7 @@ static struct tm *localsub(const time_t *timep, const long offset, struct tm *tm
 	*/
 	result = timesub(&t, ttisp->tt_gmtoff, sp, tmp);
 	tmp->tm_isdst = ttisp->tt_isdst;
+	tmp->tm_gmtoff = ttisp->tt_gmtoff;
 #ifdef TM_ZONE
 	tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
 #endif /* defined TM_ZONE */