diff --git a/pd/nw/dialog_iemgui.html b/pd/nw/dialog_iemgui.html
index 07581ab862fa80f9316ddd1e4a8faf3ea2343b0f..cd39e492a573f96af0cc09bfca8e87ee0b73e7b3 100644
--- a/pd/nw/dialog_iemgui.html
+++ b/pd/nw/dialog_iemgui.html
@@ -554,11 +554,13 @@ function ok() {
 
 function change_width_and_height_labels() {
     [".mknob_steps", ".mknob_size"].forEach(function(sel) {
-        document.body.querySelectorAll(sel).forEach(function(e) {
+        Array.prototype.forEach.call(
+            document.body.querySelectorAll(sel), function(e) {
             e.setAttribute("data-i18n", "iem.prop" + sel);
         });
-        document.body.querySelectorAll(sel + "_tt").forEach(function(e) {
-            e.setAttribute("data-i18n", "[title]iem.prop" + sel + "_tt");
+	Array.prototype.forEach.call(
+            document.body.querySelectorAll(sel + "_tt"), function(e) {
+                e.setAttribute("data-i18n", "[title]iem.prop" + sel + "_tt");
         });
     });
 }
diff --git a/pd/nw/pd_canvas.js b/pd/nw/pd_canvas.js
index 399ea05f7f5dca3ea1cacf7546bb64ab0c355d9d..df06e0ff42181c67a443610b3eba889bf33a6164 100644
--- a/pd/nw/pd_canvas.js
+++ b/pd/nw/pd_canvas.js
@@ -498,7 +498,7 @@ var canvas_events = (function() {
                     && evt.target.parentNode.parentNode
                     && evt.target.parentNode.parentNode.id === "dropdown_list") {
                     li_array = evt.target.parentNode.querySelectorAll('li');
-                    li_array.forEach(function(e) {
+                    Array.prototype.forEach.call(li_array, function(e) {
                         e.classList.remove("highlighted");
                     });
                     evt.target.classList.add("highlighted");