diff --git a/src/middleware/user.js b/src/middleware/user.js
index ca6afcaf9b..f522ae3a1e 100644
--- a/src/middleware/user.js
+++ b/src/middleware/user.js
@@ -254,8 +254,12 @@ module.exports = function (middleware) {
 			if (res.locals.isAPI) {
 				req.params.userslug = lowercaseSlug;
 			} else {
-				const newPath = req.path.replace(new RegExp(`/${req.params.userslug}`), () => `/${lowercaseSlug}`);
-				return res.redirect(`${nconf.get('relative_path')}${newPath}`);
+				try {
+					const newPath = req.path.replace(new RegExp(`/${req.params.userslug}`), () => `/${lowercaseSlug}`);
+					return res.redirect(`${nconf.get('relative_path')}${newPath}`);
+				} catch (err) {
+					next(err);
+				}
 			}
 		}