diff --git a/_security-plugin/access-control/impersonation.md b/_security-plugin/access-control/impersonation.md
index 82966389..100d1104 100644
--- a/_security-plugin/access-control/impersonation.md
+++ b/_security-plugin/access-control/impersonation.md
@@ -41,8 +41,8 @@ plugins.security.authcz.impersonation_dn:
 
 ## Impersonating Users
 
-To impersonate another user, submit a request to the system with the HTTP header `opensearch_security_impersonate_as` set to the name of the user to be impersonated. A good test is to make a GET request to the `_plugins/_security/authinfo` URI:
+To impersonate another user, submit a request to the system with the HTTP header `opendistro_security_impersonate_as` set to the name of the user to be impersonated. A good test is to make a GET request to the `_plugins/_security/authinfo` URI:
 
 ```bash
-curl -XGET -u 'admin:admin' -k -H "opensearch_security_impersonate_as: user_1" https://localhost:9200/_plugins/_security/authinfo?pretty
+curl -XGET -u 'admin:admin' -k -H "opendistro_security_impersonate_as: user_1" https://localhost:9200/_plugins/_security/authinfo?pretty
 ```