From 804acae44b260d5bcfa229e86717cb5375cf8860 Mon Sep 17 00:00:00 2001
From: Yuri Kuznetsov <yurikuzn@users.noreply.github.com>
Date: Tue, 13 Sep 2022 20:51:34 +0300
Subject: [PATCH] fix extension check

---
 application/Espo/Services/Attachment.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/application/Espo/Services/Attachment.php b/application/Espo/Services/Attachment.php
index 4002af5e07..7f73d8b5fd 100644
--- a/application/Espo/Services/Attachment.php
+++ b/application/Espo/Services/Attachment.php
@@ -306,7 +306,7 @@ class Attachment extends Record
             return;
         }
 
-        $extension = self::getFileExtension($attachment) ?? '';
+        $extension = strtolower(self::getFileExtension($attachment) ?? '');
 
         $mimeType = $this->getMimeTypeUtil()->getMimeTypeByExtension($extension) ??
             $attachment->getType();