diff --git a/lib/client/config.js b/lib/client/config.js
index 3742963f..9f3c9ab9 100644
--- a/lib/client/config.js
+++ b/lib/client/config.js
@@ -74,10 +74,13 @@ var CloudCmd, Util, DOM;
                 inputs      = DOM.getByTag(INPUT, div);
                 inputFirst  = inputs[0];
                 
-                if (inputFirst)
+                if (inputFirst) {
+                    onAuthChange(inputFirst.checked);
+                    
                     focus   = function() {
                         inputFirst.focus();
                     };
+                }
                 
                 Util.forEach(inputs, function(input) {
                     Events.add('change', input, onChange)
@@ -134,6 +137,8 @@ var CloudCmd, Util, DOM;
                     onLSChange(data);
                 else if (el.id === 'dirStorage')
                     onLSChange(data);
+                else if (el.id === 'auth')
+                    onAuthChange(data);
                 
                 break;
             case 'number':
@@ -192,6 +197,14 @@ var CloudCmd, Util, DOM;
             return element.checked;
         }
         
+        function onAuthChange(checked) {
+            var elUsername      = DOM.getById('username', Element),
+                elPassword      = DOM.getById('password', Element);
+            
+            elUsername.disabled = 
+            elPassword.disabled = !checked;
+        }
+        
         function onKey(event) {
             var keyCode = event.keyCode,
                 ESC     = Key.ESC;