diff --git a/src/dns.c b/src/dns.c
index 37263bd..d866ab0 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -54,7 +54,7 @@
 struct list dns_resolvers  = LIST_HEAD_INIT(dns_resolvers);
 struct list dns_srvrq_list = LIST_HEAD_INIT(dns_srvrq_list);
 
-static THREAD_LOCAL int64_t dns_query_id_seed = 0; /* random seed */
+static THREAD_LOCAL uint64_t dns_query_id_seed = 0; /* random seed */
 
 DECLARE_STATIC_POOL(dns_answer_item_pool, "dns_answer_item", sizeof(struct dns_answer_item));
 DECLARE_STATIC_POOL(dns_resolution_pool,  "dns_resolution",  sizeof(struct dns_resolution));