diff --git a/packages/node_modules/@node-red/util/lib/util.js b/packages/node_modules/@node-red/util/lib/util.js
index d82de0d1d..85c7f317f 100644
--- a/packages/node_modules/@node-red/util/lib/util.js
+++ b/packages/node_modules/@node-red/util/lib/util.js
@@ -473,7 +473,7 @@ function setObjectProperty(msg,prop,value,createMissing) {
     for (var i=0;i<length-1;i++) {
         key = msgPropParts[i];
         if (typeof key === 'string' || (typeof key === 'number' && !Array.isArray(obj))) {
-            if (hasOwnProperty.call(obj, key)) {
+            if (hasOwnProperty.call(obj, key) && obj[key] != null) {
                 if (length > 1 && ((typeof obj[key] !== "object" && typeof obj[key] !== "function") || obj[key] === null)) {
                     // Break out early as we cannot create a property beneath
                     // this type of value