diff --git a/lib/asyn-thrdd.c b/lib/asyn-thrdd.c
index 900bd27d57..12a9b9deae 100644
--- a/lib/asyn-thrdd.c
+++ b/lib/asyn-thrdd.c
@@ -384,7 +384,7 @@ static void async_thrdd_item_process(void *arg)
 #else /* HAVE_GETADDRINFO */
 
 /* Process the item, using Curl_ipv4_resolve_r() */
-static void async_thrdd_item_process(void *item)
+static void async_thrdd_item_process(void *arg)
 {
   struct async_thrdd_item *item = arg;
 
@@ -612,7 +612,7 @@ CURLcode Curl_async_getaddrinfo(struct Curl_easy *data,
   if(result)
     return result;
 
-#ifdef CURL_IPRESOLVE_V6
+#ifdef CURLRES_IPV6
   /* Do not start an AAAA query for an ipv4 address when
    * we will start an A query for it. */
   if((async->dns_queries & CURL_DNSQ_AAAA) &&