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index ea7efa2..6d1ad16 100644
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+++ b/readme.md
@@ -203,15 +203,6 @@ kubectl apply -f https://raw.githubusercontent.com/dockur/windows/refs/heads/mas
     KEYBOARD: "en-US"
   ```
 
-### How do I set the product key?
-
-  By default, an evaluation version of Windows will be installed, but if you have a product key you can add a `KEY` variable like this (before installation):
-
-  ```yaml
-  environment:
-    KEY: "xxxxx-xxxxx-xxxxx-xxxxx-xxxxx"
-  ```
-
 ### How do I select the edition?
 
   Windows Server offers a minimalistic Core edition without a GUI. To select those non-standard editions, you can add a `EDITION` variable like this (before installation):