X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/b77ab6f3af996f924bd2ddbac6e88f61a8bf6cf9..refs/pull/5488/head:/app/Uploads/ImageRepo.php

diff --git a/app/Uploads/ImageRepo.php b/app/Uploads/ImageRepo.php
index 1e58816a4..845067fdc 100644
--- a/app/Uploads/ImageRepo.php
+++ b/app/Uploads/ImageRepo.php
@@ -166,7 +166,7 @@ class ImageRepo
      */
     public function updateImageFile(Image $image, UploadedFile $file): void
     {
-        if ($file->getClientOriginalExtension() !== pathinfo($image->path, PATHINFO_EXTENSION)) {
+        if (strtolower($file->getClientOriginalExtension()) !== strtolower(pathinfo($image->path, PATHINFO_EXTENSION))) {
             throw new ImageUploadException(trans('errors.image_upload_replace_type'));
         }