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 0c8bc83b6..05256343b 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
@@ -608,7 +608,7 @@ RED.nodes = (function() {
                 const ws = workspaces[z]
                 if (ws) {
                     const contentsChanged = tabDirtyMap[z].size > 0 || tabDeletedNodesMap[z].size > 0
-                    if (!!ws.contentsChanged !== contentsChanged) {
+                    if (Boolean(ws.contentsChanged) !== contentsChanged) {
                         ws.contentsChanged = contentsChanged
                         RED.events.emit("flows:change", ws);
                     }