diff --git a/lib/nodered/nodeRedBlocksCodeGen.js b/lib/nodered/nodeRedBlocksCodeGen.js
index 564ae14..285ab9a 100644
--- a/lib/nodered/nodeRedBlocksCodeGen.js
+++ b/lib/nodered/nodeRedBlocksCodeGen.js
@@ -43,13 +43,13 @@ Blockly.JavaScript['node_object_get'] = function(block) {
         case "REMOVE":
             switch(value_object) {
                 case 'context':
-                    code = 'context.set(' + value_field_name + ');\n';
+                    code = 'context.set(' + value_field_name + ', undefined);\n';
                     break;
                 case 'flow':
-                    code = 'flow.set(' + value_field_name + ');\n';
+                    code = 'flow.set(' + value_field_name + ', undefined);\n';
                     break;
                 case 'global':
-                    code = 'global.set(' + value_field_name + ');\n';
+                    code = 'global.set(' + value_field_name + ', undefined);\n';
                     break;
                 default: // normal object (i.e. no Node-RED specific memory)
                     code = 'delete ' + value_object + splitNestedFields(value_field_name) + ';\n';