diff --git a/packages/netlify-cms-widget-boolean/src/BooleanControl.js b/packages/netlify-cms-widget-boolean/src/BooleanControl.js
index 0efd1672..1fd2e086 100644
--- a/packages/netlify-cms-widget-boolean/src/BooleanControl.js
+++ b/packages/netlify-cms-widget-boolean/src/BooleanControl.js
@@ -21,7 +21,7 @@ export default class BooleanControl extends React.Component {
       setInactiveStyle
     } = this.props;
     return (
-      <div>
+      <div className={classNameWrapper}>
         <Toggle
           id={forID}
           active={isBoolean(value) ? value : field.get('defaultValue', false)}