diff --git a/core/modules/file/config/schema/file.schema.yml b/core/modules/file/config/schema/file.schema.yml
index df5b1ba..2c09484 100644
--- a/core/modules/file/config/schema/file.schema.yml
+++ b/core/modules/file/config/schema/file.schema.yml
@@ -36,6 +36,13 @@ field.file.settings:
       type: string
       label: 'Upload destination'
 
+field.file.value:
+  type: sequence
+  label: 'Default value'
+  sequence:
+    - type: string
+      label: 'Value'
+
 field.file.instance_settings:
   type: mapping
   label: 'File settings'