diff --git a/src/main/java/org/opensearch/security/auth/BackendRegistry.java b/src/main/java/org/opensearch/security/auth/BackendRegistry.java
index ad7df446ac..4de8d4da79 100644
--- a/src/main/java/org/opensearch/security/auth/BackendRegistry.java
+++ b/src/main/java/org/opensearch/security/auth/BackendRegistry.java
@@ -608,6 +608,7 @@ private User impersonate(final RestRequest request, final User originalUser) thr
             for (final AuthDomain authDomain : restAuthDomains) {
                 final AuthenticationBackend authenticationBackend = authDomain.getBackend();
 
+                //Skip over the OnBehalfOfAuthenticator since it is not compatible for user impersonation
                 if (authDomain.getHttpAuthenticator() instanceof OnBehalfOfAuthenticator) {
                     continue;
                 }