diff --git a/packages/node_modules/@node-red/editor-client/src/js/history.js b/packages/node_modules/@node-red/editor-client/src/js/history.js
index 08e83ee87..911107cc6 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/history.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/history.js
@@ -833,8 +833,8 @@ RED.history = (function() {
     return {
         //TODO: this function is a placeholder until there is a 'save' event that can be listened to
         markAllDirty: function() {
-            for (var i=0;i<undoHistory.length;i++) {
-                undoHistory[i].dirty = true;
+            for (const event of [...undoHistory, ...redoHistory]) {
+                event.dirty = true;
             }
         },
         list: function() {