diff --git a/networking/ntpd.c b/networking/ntpd.c
index fb82fd309..086b3ea74 100644
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -408,7 +408,7 @@ adjtime_wrap(void)
 	qsort(peers, offset_cnt, sizeof(peers[0]), offset_compare);
 
 	middle = offset_cnt / 2;
-	if ((offset_cnt & 1) == 0) {
+	if ((offset_cnt & 1) == 0 && middle != 0) {
 		offset_median = (peers[middle-1]->update.offset + peers[middle]->update.offset) / 2;
 		G.status.rootdelay = (peers[middle-1]->update.delay + peers[middle]->update.delay) / 2;
 		G.status.stratum = MAX(peers[middle-1]->update.status.stratum, peers[middle]->update.status.stratum);