diff --git a/p2p/discover/table_util_test.go b/p2p/discover/table_util_test.go
index fe10883fe6..9b22aabf21 100644
--- a/p2p/discover/table_util_test.go
+++ b/p2p/discover/table_util_test.go
@@ -239,6 +239,8 @@ func checkNodesEqual(got, want []*enode.Node) error {
 				goto NotEqual
 			}
 		}
+	} else {
+		return fmt.Errorf("length dismatch: got %d nodes, want %d nodes", len(got), len(want))
 	}
 	return nil
 
diff --git a/p2p/discover/v5_udp_test.go b/p2p/discover/v5_udp_test.go
index 1c41941c70..be592acb09 100644
--- a/p2p/discover/v5_udp_test.go
+++ b/p2p/discover/v5_udp_test.go
@@ -90,7 +90,7 @@ func startLocalhostV5(t *testing.T, cfg Config) *UDPv5 {
 	}
 	realaddr := socket.LocalAddr().(*net.UDPAddr)
 	ln.SetStaticIP(realaddr.IP)
-	ln.Set(enr.UDP(realaddr.Port))
+	ln.SetFallbackUDP(realaddr.Port)
 	udp, err := ListenV5(socket, ln, cfg)
 	if err != nil {
 		t.Fatal(err)