diff --git a/packages/entity/list.js b/packages/entity/list.js
index 999035c..67c40b9 100644
--- a/packages/entity/list.js
+++ b/packages/entity/list.js
@@ -47,8 +47,8 @@ class EntityListBase {
         const newEntity = create().fromJSON({
           traits: change[uuid],
         });
-        this.addEntity(newEntity);
         this.uuidMap_PRIVATE[uuid] = newEntity.instanceUuid;
+        this.addEntity(newEntity);
       }
     }
   }