diff --git a/openapi/paths/customer/order/_types/order.yaml b/openapi/paths/customer/order/_types/order.yaml
index c982fa00..cde3d975 100644
--- a/openapi/paths/customer/order/_types/order.yaml
+++ b/openapi/paths/customer/order/_types/order.yaml
@@ -58,9 +58,7 @@ properties:
     items:
       $ref: fulfillment.yaml
   line_items:
-    type: array
-    items:
-      $ref: line-item.yaml
+    $ref: line-item.yaml
   refunds:
     type: array
     items: