diff --git a/src/simpleauth.js b/src/simpleauth.js
index f6ecb964d..edf9b2356 100644
--- a/src/simpleauth.js
+++ b/src/simpleauth.js
@@ -87,9 +87,9 @@ function login(req, res, next) {
 
     loginLogic(req.body.clientId, req.body.username, req.body.password, function (error, result) {
         if (error && error.reason === ClientsError.NOT_FOUND) return next(new HttpError(401, 'Unknown client'));
-        if (error && error.reason === ClientsError.INVALID_CLIENT) return next(new HttpError(401, 'Unkown client'));
+        if (error && error.reason === ClientsError.INVALID_CLIENT) return next(new HttpError(401, 'Unknown client'));
         if (error && error.reason === UserError.NOT_FOUND) return next(new HttpError(401, 'Forbidden'));
-        if (error && error.reason === AppsError.NOT_FOUND) return next(new HttpError(401, 'Unkown app'));
+        if (error && error.reason === AppsError.NOT_FOUND) return next(new HttpError(401, 'Unknown app'));
         if (error && error.reason === UserError.WRONG_PASSWORD) return next(new HttpError(401, 'Forbidden'));
         if (error && error.reason === AppsError.ACCESS_DENIED) return next(new HttpError(401, 'Forbidden'));
         if (error) return next(new HttpError(500, error));