diff --git a/claro.theme b/claro.theme
index 942196c..6019828 100644
--- a/claro.theme
+++ b/claro.theme
@@ -450,6 +450,10 @@ function claro_form_view_edit_form_alter(&$form, FormStateInterface $form_state)
     //
     // @todo: revisit after https://www.drupal.org/node/3057577 is fixed.
     $dummy_dropbutton = &$form['displays']['settings']['settings_content']['tab_content']['details']['top']['actions'];
+
+    if (!$dummy_dropbutton) {
+      return;
+    }
     $child_keys = Element::children($dummy_dropbutton);
     $prefix_regex = '/(<.*class\s*= *["\']?)([^"\']*)(.*)/i';
     $child_count = 0;