diff --git a/plugins/dynamix/UserAdd.page b/plugins/dynamix/UserAdd.page
index 5aaa2efd0..06a2f568f 100644
--- a/plugins/dynamix/UserAdd.page
+++ b/plugins/dynamix/UserAdd.page
@@ -62,10 +62,6 @@ function checkUsername(form) {
     swal({title:"_(Invalid user name)_",text:"_(Use only lowercase letters, digits, underscores and dashes)_",type:"error",confirmButtonText:'_(Ok)_'});
     return false;
   }
-  if (username.match('^(disk[0-9]+|cache[0-9]*|parity[0-9]*|flash)$')) {
-    swal({title:"_(Invalid user name)_",text:"_(Do not use reserved names)_",type:"error",confirmButtonText:'_(Ok)_'});
-    return false;
-  }
   if (form.userPasswordGUI.value.length > 128 || form.userPasswordConfGUI.value.length > 128) {
     swal({title:"_(Password too long)_",text:"_(Use a password up to 128 characters)_",type:"error",confirmButtonText:'_(Ok)_'});
     return false;
@@ -163,10 +159,10 @@ $(function(){
 
 <form markdown="1" name="user_edit" method="POST" action="/update.htm" target="progressFrame" onsubmit="return checkUsername(this)">
 _(User name)_:
-: <input type="text" name="userName" maxlength="32" onKeyUp="this.form.cmdUserEdit.disabled=(this.form.userName.value=='')" pattern="^[a-z_][a-z0-9_-]*[$]?$">
+: <input type="text" name="userName" maxlength="40" onKeyUp="this.form.cmdUserEdit.disabled=(this.form.userName.value=='')" pattern="^[a-z_][a-z0-9_-]*[$]?$">
 
 :help1
-> Usernames may be up to 32 characters long and must start with a **lower case letter** or an underscore,
+> Usernames may be up to 40 characters long and must start with a **lower case letter** or an underscore,
 > followed by **lower case letters**, digits, underscores, or dashes. They can end with a dollar sign.
 :end