diff --git a/lib/master.js b/lib/master.js
index dd7cc50..55115c6 100644
--- a/lib/master.js
+++ b/lib/master.js
@@ -484,10 +484,10 @@ function Master(options, adapter) {
         adapter.setState('info.connection', false, true);
 
         if (options.config.type === 'tcp') {
+            
+            options.config.tcp.bind = "127.0.0.1" ;
             const tcp = options.config.tcp;
 
-            tcp.bind="127.0.0.1";
-
             if (!tcp || !tcp.bind || tcp.bind === '0.0.0.0') {
                 adapter.log.error('IP address is not defined');
                 return;