diff --git a/dnsapi.md b/dnsapi.md
index b1bd279..b5c0a80 100644
--- a/dnsapi.md
+++ b/dnsapi.md
@@ -2667,8 +2667,6 @@ Export your credentials as environment variables:
 ```
 export AURORA_Key="..."
 export AURORA_Secret="..."
-# Optionally, you can provide the zone id (visible in the URL when editing DNS records) to prevent some API-calls.
-export AURORA_Zone_ID="..."
 ```
 
 To issue a certificate, execute: