diff --git a/config/schema/type_tray.schema.yml b/config/schema/type_tray.schema.yml
index dc717968fca5f3b9551be54b24e2b1fd46c60eed..bc31ab5915263042d415d4ec992c9869ff554a40 100644
--- a/config/schema/type_tray.schema.yml
+++ b/config/schema/type_tray.schema.yml
@@ -26,10 +26,10 @@ node.type.*.third_party.type_tray:
       type: string
       label: 'Path to the image to be used as icon'
     type_description:
-      type: string
+      type: label
       label: 'Extended description'
     existing_nodes_link_text:
-      type: string
+      type: label
       label: 'Text to be used when building links to existing content'
     type_weight:
       type: integer