diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Lib/RESTProxy.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Lib/RESTProxy.pm
index 9ff48d440..7b1fe653d 100644
--- a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Lib/RESTProxy.pm
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Lib/RESTProxy.pm
@@ -49,6 +49,11 @@ sub getUser {
                       $self->conf->{proxyAuthServiceChoiceValue} )
                 : ()
             ),
+            (
+                $self->conf->{impersonationRule} && $req->param('spoofId')
+                ? ( spoofId => $req->param('spoofId') )
+                : ()
+            )
         }
     );
     unless ( $resp->is_success ) {