diff --git a/apps/files_sharing/lib/ResponseDefinitions.php b/apps/files_sharing/lib/ResponseDefinitions.php
index 8e5a4dbe79932..9a6ef199169ea 100644
--- a/apps/files_sharing/lib/ResponseDefinitions.php
+++ b/apps/files_sharing/lib/ResponseDefinitions.php
@@ -28,7 +28,7 @@
  *     item_size: float|int,
  *     item_source: int,
  *     item_type: 'file'|'folder',
- *     label: string,
+ *     label: ?string,
  *     mail_send: 0|1,
  *     mimetype: string,
  *     note: string,
diff --git a/apps/files_sharing/openapi.json b/apps/files_sharing/openapi.json
index b6a7628b86d10..d6df6e40382c3 100644
--- a/apps/files_sharing/openapi.json
+++ b/apps/files_sharing/openapi.json
@@ -578,7 +578,8 @@
                         ]
                     },
                     "label": {
-                        "type": "string"
+                        "type": "string",
+                        "nullable": true
                     },
                     "mail_send": {
                         "type": "integer",