--- a/devtools/server/actors/inspector.js
+++ b/devtools/server/actors/inspector.js
@@ -994,17 +994,19 @@ var NodeFront = protocol.FrontClass(Node
   getFormProperty: function(name) {
     return this._form.props ? this._form.props[name] : null;
   },
 
   hasFormProperty: function(name) {
     return this._form.props ? (name in this._form.props) : null;
   },
 
-  get formProperties() this._form.props,
+  get formProperties() {
+    return this._form.props;
+  },
 
   /**
    * Return a new AttributeModificationList for this node.
    */
   startModifyingAttributes: function() {
     return AttributeModificationList(this);
   },