From 1f4d32ded9cf0ff80ec4ae69f84e5ec3aa609b8d Mon Sep 17 00:00:00 2001
From: Ryan Cramer <ryan@processwire.com>
Date: Thu, 19 Oct 2023 09:39:26 -0400
Subject: [PATCH] Fix issue processwire/processwire-issues#1829

---
 wire/core/Pagefiles.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wire/core/Pagefiles.php b/wire/core/Pagefiles.php
index c25a5392..79fb5247 100644
--- a/wire/core/Pagefiles.php
+++ b/wire/core/Pagefiles.php
@@ -597,6 +597,7 @@ class Pagefiles extends WireArray implements PageFieldValueInterface {
 			}
 		}
 		
+		$basename = strtolower($basename);
 		if(!ctype_alnum(ltrim($ext, '.'))) $ext = preg_replace('/[^a-z0-9.]/', '_', $ext); 
 		if(!$allowDots && strpos($basename, '.') !== false) $basename = str_replace('.', '_', $basename); 
 		$basename .= $ext;