# UNDF: UNDF-2026-000000882
--- a/src/libs/zbxdiscoverer/discoverer_queue.c
+++ b/src/libs/zbxdiscoverer/discoverer_queue.c
@@ -108,7 +108,8 @@
 {
 	zbx_discoverer_job_t	*job;
-	zbx_vector_uint64_t	ids;
+	zbx_hashset_t		ids;
 	int			one_task = SUCCEED;
-	zbx_vector_uint64_create(&ids);
+
+	zbx_hashset_create(&ids, 64, ZBX_DEFAULT_UINT64_HASH_FUNC, ZBX_DEFAULT_UINT64_COMPARE_FUNC);

 	while (1)
@@ -133,10 +134,10 @@
 		if (queue->jobs.head == queue->jobs.tail && SUCCEED == one_task)
 			break;

-		if (FAIL != zbx_vector_uint64_search(&ids, id, ZBX_DEFAULT_UINT64_COMPARE_FUNC))
+		if (NULL != zbx_hashset_search(&ids, &id))
 			break;

-		zbx_vector_uint64_append(&ids, id);
+		zbx_hashset_insert(&ids, &id, sizeof(id));
 	}

-	zbx_vector_uint64_destroy(&ids);
+	zbx_hashset_destroy(&ids);

 	return job;