diff --git a/lib/private/Files/ObjectStore/S3ConfigTrait.php b/lib/private/Files/ObjectStore/S3ConfigTrait.php
index 3a399e6413d08..63f14ac2d0058 100644
--- a/lib/private/Files/ObjectStore/S3ConfigTrait.php
+++ b/lib/private/Files/ObjectStore/S3ConfigTrait.php
@@ -20,7 +20,7 @@ trait S3ConfigTrait {
 
 	protected int $timeout;
 
-	protected string $proxy;
+	protected string|false $proxy;
 
 	protected string $storageClass;