diff --git a/src/mailer.js b/src/mailer.js
index 1a557d7f0..8d99a27f4 100644
--- a/src/mailer.js
+++ b/src/mailer.js
@@ -282,12 +282,11 @@ function sendCrashNotification(program, context) {
     enqueue(mailOptions);
 }
 
-function sendFeedback(user, type, subject, description, callback) {
+function sendFeedback(user, type, subject, description) {
     assert.strictEqual(typeof user, 'object');
     assert.strictEqual(typeof type, 'string');
     assert.strictEqual(typeof subject, 'string');
     assert.strictEqual(typeof description, 'string');
-    assert.strictEqual(typeof callback, 'function');
 
     assert(type === exports.FEEDBACK_TYPE_TICKET || type === exports.FEEDBACK_TYPE_FEEDBACK);
 
diff --git a/src/routes/cloudron.js b/src/routes/cloudron.js
index 6c386fde2..2c9f985d2 100644
--- a/src/routes/cloudron.js
+++ b/src/routes/cloudron.js
@@ -167,8 +167,7 @@ function feedback(req, res, next) {
     if (typeof req.body.subject !== 'string') return next(new HttpError(400, 'subject must be string'));
     if (typeof req.body.description !== 'string') return next(new HttpError(400, 'description must be string'));
 
-    mailer.sendFeedback(req.user, req.body.type, req.body.subject, req.body.description, function (error) {
-        if (error) return next(new HttpError(500, error));
-        next(new HttpSuccess(201, {}));
-    });
+    mailer.sendFeedback(req.user, req.body.type, req.body.subject, req.body.description);
+
+    next(new HttpSuccess(201, {}));
 }