From 77debc3875e34d519fd3b4495a67e036068f4cd7 Mon Sep 17 00:00:00 2001
From: Yuri Kuznetsov <yurikuzn@users.noreply.github.com>
Date: Wed, 5 Oct 2022 14:30:22 +0300
Subject: [PATCH] fix

---
 application/Espo/Core/Authentication/Oidc/Sync.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/application/Espo/Core/Authentication/Oidc/Sync.php b/application/Espo/Core/Authentication/Oidc/Sync.php
index 1131f0a3f6..b6fdc93755 100644
--- a/application/Espo/Core/Authentication/Oidc/Sync.php
+++ b/application/Espo/Core/Authentication/Oidc/Sync.php
@@ -287,6 +287,8 @@ class Sync
             throw new RuntimeException("No `userNameRegularExpression` in config.");
         }
 
+        $username = strtolower($username);
+
         /** @var string $result */
         $result = preg_replace("/{$regExp}/", '_', $username);