diff --git a/core/Controller/LoginController.php b/core/Controller/LoginController.php
index 5d5ae666ca132..e9e2f02edb26a 100644
--- a/core/Controller/LoginController.php
+++ b/core/Controller/LoginController.php
@@ -289,7 +289,7 @@ public function tryLogin(string $user,
 
 		$data = new LoginData(
 			$this->request,
-			$user,
+			trim($user),
 			$password,
 			$redirect_url,
 			$timezone,