diff --git a/uw_cfg_common.module b/uw_cfg_common.module
index 45770f0d0b29e68ce5d7818c5bcb496c3cc14072..909e8d4f30526d8b5aa2ee407acdf2b3adbfe5aa 100644
--- a/uw_cfg_common.module
+++ b/uw_cfg_common.module
@@ -19,7 +19,7 @@ function uw_cfg_common_form_layout_builder_configure_section_alter(array &$form,
   unset($form['layout_builder_style']['#empty_option']);
 
   // Ensuring that the contained width is selected by default.
-  $form['layout_builder_style']['#default_value'] = $form['layout_builder_style']['#default_value'] ?: 'uw-contained-width';
+  $form['layout_builder_style']['#default_value'] = $form['layout_builder_style']['#default_value'] ?: 'uw_lbs_contained_width';
 }
 
 /**