diff --git a/bin/nsupdate/nsupdate.c b/bin/nsupdate/nsupdate.c
index 820029d3e8..0f83d40be5 100644
--- a/bin/nsupdate/nsupdate.c
+++ b/bin/nsupdate/nsupdate.c
@@ -749,13 +749,11 @@ set_source_ports(dns_dispatchmgr_t *manager) {
 	isc_result_t result;
 
 	isc_portset_create(isc_g_mctx, &v4portset);
-	result = isc_net_getudpportrange(AF_INET, &udpport_low, &udpport_high);
-	check_result(result, "isc_net_getudpportrange (v4)");
+	isc_net_getudpportrange(AF_INET, &udpport_low, &udpport_high);
 	isc_portset_addrange(v4portset, udpport_low, udpport_high);
 
 	isc_portset_create(isc_g_mctx, &v6portset);
-	result = isc_net_getudpportrange(AF_INET6, &udpport_low, &udpport_high);
-	check_result(result, "isc_net_getudpportrange (v6)");
+	isc_net_getudpportrange(AF_INET6, &udpport_low, &udpport_high);
 	isc_portset_addrange(v6portset, udpport_low, udpport_high);
 
 	result = dns_dispatchmgr_setavailports(manager, v4portset, v6portset);
diff --git a/bin/tools/mdig.c b/bin/tools/mdig.c
index 6240401bb3..d0a2c7145c 100644
--- a/bin/tools/mdig.c
+++ b/bin/tools/mdig.c
@@ -2001,18 +2001,12 @@ set_source_ports(dns_dispatchmgr_t *manager) {
 	isc_result_t result;
 
 	isc_portset_create(isc_g_mctx, &v4portset);
-	result = isc_net_getudpportrange(AF_INET, &udpport_low, &udpport_high);
-	if (result != ISC_R_SUCCESS) {
-		fatal("isc_net_getudpportrange (v4) failed");
-	}
+	isc_net_getudpportrange(AF_INET, &udpport_low, &udpport_high);
 
 	isc_portset_addrange(v4portset, udpport_low, udpport_high);
 
 	isc_portset_create(isc_g_mctx, &v6portset);
-	result = isc_net_getudpportrange(AF_INET6, &udpport_low, &udpport_high);
-	if (result != ISC_R_SUCCESS) {
-		fatal("isc_net_getudpportrange (v6) failed");
-	}
+	isc_net_getudpportrange(AF_INET6, &udpport_low, &udpport_high);
 
 	isc_portset_addrange(v6portset, udpport_low, udpport_high);
 
diff --git a/lib/dns/client.c b/lib/dns/client.c
index 6027c0d081..73ea515cec 100644
--- a/lib/dns/client.c
+++ b/lib/dns/client.c
@@ -142,22 +142,17 @@ setsourceports(isc_mem_t *mctx, dns_dispatchmgr_t *manager) {
 	isc_result_t result;
 
 	isc_portset_create(mctx, &v4portset);
-	CHECK(isc_net_getudpportrange(AF_INET, &udpport_low, &udpport_high));
+	isc_net_getudpportrange(AF_INET, &udpport_low, &udpport_high);
 	isc_portset_addrange(v4portset, udpport_low, udpport_high);
 
 	isc_portset_create(mctx, &v6portset);
-	CHECK(isc_net_getudpportrange(AF_INET6, &udpport_low, &udpport_high));
+	isc_net_getudpportrange(AF_INET6, &udpport_low, &udpport_high);
 	isc_portset_addrange(v6portset, udpport_low, udpport_high);
 
 	result = dns_dispatchmgr_setavailports(manager, v4portset, v6portset);
 
-cleanup:
-	if (v4portset != NULL) {
-		isc_portset_destroy(mctx, &v4portset);
-	}
-	if (v6portset != NULL) {
-		isc_portset_destroy(mctx, &v6portset);
-	}
+	isc_portset_destroy(mctx, &v4portset);
+	isc_portset_destroy(mctx, &v6portset);
 
 	return result;
 }