diff --git a/apps/app_queue.c b/apps/app_queue.c
index dc7a0a074a..dfc1a0b250 100644
--- a/apps/app_queue.c
+++ b/apps/app_queue.c
@@ -3486,7 +3486,9 @@ static struct callattempt *wait_for_answer(struct queue_ent *qe, struct callatte
 				if (o->stillgoing) {	/* Keep track of important channels */
 					stillgoing = 1;
 					if (o->chan) {
-						watchers[pos++] = o->chan;
+						if (pos < AST_MAX_WATCHERS) {
+							watchers[pos++] = o->chan;
+						}
 						if (!start)
 							start = o;
 						else