diff --git a/dnsapi.md b/dnsapi.md
index 6f95218..1db465e 100644
--- a/dnsapi.md
+++ b/dnsapi.md
@@ -2649,7 +2649,7 @@ Please report any issue to https://github.com/acmesh-official/acme.sh/issues/345
 
 Export your username/password as environment variables:
 ```
-export AZION_Username="user@example.com"
+export AZION_Email="user@example.com"
 export AZION_Password="password"
 ```