diff --git a/panelizer.module b/panelizer.module
index 6e42937..c5b1da0 100644
--- a/panelizer.module
+++ b/panelizer.module
@@ -789,7 +789,8 @@ function panelizer_export_ui_switcher_page($entity_handler, $bundle, $plugin_nam
     $view_mode = 'page_manager';
   }
 
-  // Load the $plugin information
+  // Load the $plugin information.
+  ctools_include('export-ui');
   $plugin = ctools_get_export_ui($plugin_name);
   $handler = ctools_export_ui_get_handler($plugin);
 
diff --git a/plugins/entity/PanelizerEntityDefault.class.php b/plugins/entity/PanelizerEntityDefault.class.php
index 83c1388..a113f52 100644
--- a/plugins/entity/PanelizerEntityDefault.class.php
+++ b/plugins/entity/PanelizerEntityDefault.class.php
@@ -643,6 +643,7 @@ abstract class PanelizerEntityDefault implements PanelizerEntityInterface {
       // Also make clones of all the export UI menu items. Again there is some
       // duplicated code here because of subtle differences.
       // Load the $plugin information.
+      ctools_include('export-ui');
       $plugin = ctools_get_export_ui('panelizer_defaults');
 
       $ui_items = $plugin['menu']['items'];