diff --git a/packages/node_modules/@node-red/editor-client/src/js/nodes.js b/packages/node_modules/@node-red/editor-client/src/js/nodes.js
index ab7fae401..7ef65c445 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/nodes.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/nodes.js
@@ -2135,7 +2135,7 @@ RED.nodes = (function() {
             n = new_nodes[i];
             if (n.wires) {
                 for (var w1=0;w1<n.wires.length;w1++) {
-                    var wires = (n.wires[w1] instanceof Array)?n.wires[w1]:[n.wires[w1]];
+                    var wires = (Array.isArray(n.wires[w1]))?n.wires[w1]:[n.wires[w1]];
                     for (var w2=0;w2<wires.length;w2++) {
                         if (node_map.hasOwnProperty(wires[w2])) {
                             if (n.z === node_map[wires[w2]].z) {