diff --git a/content/en-us/reference/engine/datatypes/Instance.yaml b/content/en-us/reference/engine/datatypes/Instance.yaml
index e5f2ee09c..38a47d6bf 100644
--- a/content/en-us/reference/engine/datatypes/Instance.yaml
+++ b/content/en-us/reference/engine/datatypes/Instance.yaml
@@ -38,7 +38,7 @@ constructors:
         summary: |
           Class name of the new instance to create.
       - name: parent
-        type: Instance
+        type: Instance?
         default:
         summary: |
           Optional object to parent the new instance to. Not recommended for performance reasons (see description above).