diff --git a/lib/dns/nta.c b/lib/dns/nta.c
index 060fa6c32d..ce00b25d8a 100644
--- a/lib/dns/nta.c
+++ b/lib/dns/nta.c
@@ -579,7 +579,9 @@ dns_ntatable_save(dns_ntatable_t *ntatable, FILE *fp) {
 }
 
 static void
-dns__nta_shutdown_cb(dns__nta_t *nta) {
+dns__nta_shutdown_cb(void *arg) {
+	dns__nta_t *nta = arg;
+
 	REQUIRE(VALID_NTA(nta));
 
 	if (isc_log_wouldlog(dns_lctx, ISC_LOG_DEBUG(3))) {
@@ -602,7 +604,7 @@ dns__nta_shutdown(dns__nta_t *nta) {
 	REQUIRE(VALID_NTA(nta));
 
 	dns__nta_ref(nta);
-	isc_async_run(nta->loop, (isc_job_cb)dns__nta_shutdown_cb, nta);
+	isc_async_run(nta->loop, dns__nta_shutdown_cb, nta);
 	nta->shuttingdown = true;
 }
 
diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
index c9847e3b09..a3327fc961 100644
--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
@@ -634,7 +634,7 @@ resquery_connected(isc_result_t eresult, isc_region_t *region, void *arg);
 static void
 fctx_try(fetchctx_t *fctx, bool retrying, bool badcache);
 static void
-fctx_shutdown(fetchctx_t *fctx);
+fctx_shutdown(void *arg);
 static void
 fctx_minimize_qname(fetchctx_t *fctx);
 static void
@@ -4369,7 +4369,9 @@ fctx_expired(void *arg) {
 }
 
 static void
-fctx_shutdown(fetchctx_t *fctx) {
+fctx_shutdown(void *arg) {
+	fetchctx_t *fctx = arg;
+
 	REQUIRE(VALID_FCTX(fctx));
 
 	fctx_done_unref(fctx, ISC_R_SHUTTINGDOWN);
@@ -10151,8 +10153,7 @@ dns_resolver_shutdown(dns_resolver_t *res) {
 			INSIST(fctx != NULL);
 
 			fetchctx_ref(fctx);
-			isc_async_run(fctx->loop, (isc_job_cb)fctx_shutdown,
-				      fctx);
+			isc_async_run(fctx->loop, fctx_shutdown, fctx);
 		}
 		isc_hashmap_iter_destroy(&it);
 		RWUNLOCK(&res->fctxs_lock, isc_rwlocktype_write);
@@ -10495,7 +10496,7 @@ dns_resolver_createfetch(dns_resolver_t *res, const dns_name_t *name,
 
 	if (new_fctx) {
 		fetchctx_ref(fctx);
-		isc_async_run(fctx->loop, (isc_job_cb)fctx_start, fctx);
+		isc_async_run(fctx->loop, fctx_start, fctx);
 	}
 
 unlock:
diff --git a/tests/isc/netmgr_common.c b/tests/isc/netmgr_common.c
index 300fb5e27f..200ff98845 100644
--- a/tests/isc/netmgr_common.c
+++ b/tests/isc/netmgr_common.c
@@ -235,7 +235,7 @@ noop_recv_cb(isc_nmhandle_t *handle ISC_ATTR_UNUSED,
 }
 
 isc_result_t
-noop_accept_cb(isc_nmhandle_t *handle ISC_ATTR_UNUSED, unsigned int eresult,
+noop_accept_cb(isc_nmhandle_t *handle ISC_ATTR_UNUSED, isc_result_t eresult,
 	       void *cbarg ISC_ATTR_UNUSED) {
 	F();
 
diff --git a/tests/isc/netmgr_common.h b/tests/isc/netmgr_common.h
index 0e86282b72..5e8eec620e 100644
--- a/tests/isc/netmgr_common.h
+++ b/tests/isc/netmgr_common.h
@@ -235,7 +235,7 @@ noop_recv_cb(isc_nmhandle_t *handle, isc_result_t eresult, isc_region_t *region,
 	     void *cbarg);
 
 isc_result_t
-noop_accept_cb(isc_nmhandle_t *handle ISC_ATTR_UNUSED, unsigned int result,
+noop_accept_cb(isc_nmhandle_t *handle ISC_ATTR_UNUSED, isc_result_t result,
 	       void *cbarg ISC_ATTR_UNUSED);
 
 void