diff --git a/apps/files_sharing/lib/ResponseDefinitions.php b/apps/files_sharing/lib/ResponseDefinitions.php
index 774e4c17e001b..d412b93a1355d 100644
--- a/apps/files_sharing/lib/ResponseDefinitions.php
+++ b/apps/files_sharing/lib/ResponseDefinitions.php
@@ -29,7 +29,7 @@
  *     item_size: float|int,
  *     item_source: int,
  *     item_type: 'file'|'folder',
- *     label: ?string,
+ *     label: string,
  *     mail_send: 0|1,
  *     mimetype: string,
  *     mount-type: string,
diff --git a/apps/files_sharing/openapi.json b/apps/files_sharing/openapi.json
index 362e9aefc3235..9f38223bca39e 100644
--- a/apps/files_sharing/openapi.json
+++ b/apps/files_sharing/openapi.json
@@ -583,8 +583,7 @@
                         ]
                     },
                     "label": {
-                        "type": "string",
-                        "nullable": true
+                        "type": "string"
                     },
                     "mail_send": {
                         "type": "integer",