diff --git a/packages/node_modules/@node-red/nodes/core/network/10-mqtt.html b/packages/node_modules/@node-red/nodes/core/network/10-mqtt.html
index 86c3c0b9d..cdafab9ce 100644
--- a/packages/node_modules/@node-red/nodes/core/network/10-mqtt.html
+++ b/packages/node_modules/@node-red/nodes/core/network/10-mqtt.html
@@ -278,7 +278,7 @@
             }},
             usetls: {value: false},
             verifyservercert: { value: false},
-            compatmode: { value: true},
+            compatmode: { value: false},
             keepalive: {value:60,validate:RED.validators.number()},
             cleansession: {value: true},
             birthTopic: {value:""},
@@ -371,8 +371,8 @@
                 $("#node-config-input-usetls").prop("checked",false);
             }
             if (typeof this.compatmode === 'undefined') {
-                this.compatmode = true;
-                $("#node-config-input-compatmode").prop('checked', true);
+                this.compatmode = false;
+                $("#node-config-input-compatmode").prop('checked', false);
             }
             if (typeof this.keepalive === 'undefined') {
                 this.keepalive = 15;
diff --git a/packages/node_modules/@node-red/nodes/core/network/10-mqtt.js b/packages/node_modules/@node-red/nodes/core/network/10-mqtt.js
index 379cf8a96..4945c5c8b 100644
--- a/packages/node_modules/@node-red/nodes/core/network/10-mqtt.js
+++ b/packages/node_modules/@node-red/nodes/core/network/10-mqtt.js
@@ -98,7 +98,7 @@ module.exports = function(RED) {
             this.usews = false;
         }
         if (typeof this.compatmode === 'undefined') {
-            this.compatmode = true;
+            this.compatmode = false;
         }
         if (typeof this.verifyservercert === 'undefined') {
             this.verifyservercert = false;