diff --git a/src/model.js b/src/model.js
index b17cefa5..5db70c7a 100644
--- a/src/model.js
+++ b/src/model.js
@@ -97,6 +97,7 @@ my.Field = Backbone.Model.extend({
     // if a hash not passed in the first argument is set as value for key 0
     if ('0' in data) {
       this.set({id: data['0']});
+      this.unset('0');
     }
     if (this.attributes.label == null) {
       this.set({label: this.id});
diff --git a/test/model.test.js b/test/model.test.js
index 33941a58..41d50ab4 100644
--- a/test/model.test.js
+++ b/test/model.test.js
@@ -16,6 +16,7 @@ test('Field: basics', function () {
   var field = new recline.Model.Field('x');
   equal(field.id, 'x', 'Set of id from single argumentst to ctor');
   equal(field.attributes.id, 'x', 'Set of id from single argumentst to ctor');
+  ok(!('0' in field.toJSON()), 'Should have removed artificially created 0 key in attributes');
 });
 
 })(this.jQuery);