diff --git a/schemas/src/digital-objects/ref-organ.yaml b/schemas/src/digital-objects/ref-organ.yaml
index 5018770..f885143 100644
--- a/schemas/src/digital-objects/ref-organ.yaml
+++ b/schemas/src/digital-objects/ref-organ.yaml
@@ -352,7 +352,7 @@ slots:
   source:
     required: false
     slot_uri: ccf:placement_for
-    range: SpatialEntity
+    range: SpatialObjectReference
     inlined: false
     annotations:
       owl: AnnotationProperty, AnnotationAssertion