diff --git a/src/core/components/model.jsx b/src/core/components/model.jsx
index 3d5de80f..f96c7603 100644
--- a/src/core/components/model.jsx
+++ b/src/core/components/model.jsx
@@ -1,9 +1,10 @@
 import React, { PureComponent } from "react"
+import ImPropTypes from "react-immutable-proptypes"
 import PropTypes from "prop-types"
 
 export default class Model extends PureComponent {
   static propTypes = {
-    schema: PropTypes.object.isRequired,
+    schema: ImPropTypes.orderedMap.isRequired,
     getComponent: PropTypes.func.isRequired,
     specSelectors: PropTypes.object.isRequired,
     name: PropTypes.string,
diff --git a/src/core/components/object-model.jsx b/src/core/components/object-model.jsx
index 8746c7e4..343cefcf 100644
--- a/src/core/components/object-model.jsx
+++ b/src/core/components/object-model.jsx
@@ -142,12 +142,13 @@ export default class ObjectModel extends Component {
                   : <tr>
                     <td>{ "not ->" }</td>
                     <td>
-                      {not.map((schema, k) => {
-                        return <div key={k}><Model { ...otherProps } required={ false }
-                                 getComponent={ getComponent }
-                                 schema={ schema }
-                                 depth={ depth + 1 } /></div>
-                      })}
+                      <div>
+                        <Model { ...otherProps }
+                               required={ false }
+                               getComponent={ getComponent }
+                               schema={ not }
+                               depth={ depth + 1 } />
+                        </div>
                     </td>
                   </tr>
               }