diff --git a/knife/lib/chef/knife/user_create.rb b/knife/lib/chef/knife/user_create.rb
index <HASH>..<HASH> 100644
--- a/knife/lib/chef/knife/user_create.rb
+++ b/knife/lib/chef/knife/user_create.rb
@@ -55,11 +55,11 @@ class Chef
         description: "Prompt for user password"
 
       option :first_name,
-        long: "--first-name FIRSTNAME",
+        long: "--first-name FIRST_NAME",
         description: "First name for the user"
 
       option :last_name,
-        long: "--last-name LASTNAME",
+        long: "--last-name LAST_NAME",
         description: "Last name for the user"
 
       option :email,
Resolve spellcheck warnings in knife user create

Split the words. This is easier to read as well