diff --git a/controllers/homework.js b/controllers/homework.js
index 1a87b5ca0d..f908914e21 100644
--- a/controllers/homework.js
+++ b/controllers/homework.js
@@ -370,8 +370,7 @@ const getDeleteHandler = (service, redirectToReferer) => (req, res, next) => {
 		if (redirectToReferer) {
 			redirectHelper.safeBackRedirect(req, res);
 		} else {
-			res.sendStatus(200);
-			res.redirect(`/${service}`);
+			res.redirect(200, `/${service}`);
 		}
 	}).catch((err) => {
 		next(err);
diff --git a/controllers/oauth2.js b/controllers/oauth2.js
index 3e0c6c9731..0b47996516 100644
--- a/controllers/oauth2.js
+++ b/controllers/oauth2.js
@@ -149,10 +149,9 @@ router.get('/username/:pseudonym', async (req, res, next) => {
 			if (Configuration.get('FEATURE_CTL_TOOLS_TAB_ENABLED')) {
 				const pseudonymResponse = await api(req, { version: 'v3' })
 					.get(`/pseudonyms/${req.params.pseudonym}`);
-
 				const userResponse = await api(req)
 					.get('/users', {
-						qs: { id: pseudonymResponse.userId },
+						qs: { _id: pseudonymResponse.userId },
 						$limit: 1,
 					});
 				if (userResponse.data.length) {