diff --git a/src/ejabberd_oauth.erl b/src/ejabberd_oauth.erl
index 27e211f13..3c95dbb36 100644
--- a/src/ejabberd_oauth.erl
+++ b/src/ejabberd_oauth.erl
@@ -69,7 +69,7 @@
 
 -record(oauth_ctx, {
           password    :: binary() | admin_generated,
-          client      :: #oauth_client{}
+          client      :: #oauth_client{} | undefined
          }).
 
 %% There are two ways to obtain an oauth token: