diff --git a/config_entity_example/config/schema/config_entity_example.schema.yml b/config_entity_example/config/schema/config_entity_example.schema.yml
index 0f47ced..fdbc808 100644
--- a/config_entity_example/config/schema/config_entity_example.schema.yml
+++ b/config_entity_example/config/schema/config_entity_example.schema.yml
@@ -23,3 +23,6 @@ config_entity_example.robot.*:
     floopy:
       type: boolean
       label: 'Floopy'
+    langcode:
+      type: string
+      label: 'Default language'
\ No newline at end of file