diff --git a/src/main.js b/src/main.js
index 729d3f5..21c957b 100644
--- a/src/main.js
+++ b/src/main.js
@@ -431,6 +431,8 @@ Formsy.Form = React.createClass({
   detachFromForm: function (component) {
     delete this.inputs[component.props.name];
     delete this.model[component.props.name];
+    this.updateModel();
+    this.validateForm();
   },
   render: function () {