diff --git a/src/Plugin/search_api/display/SearchApiPageDisplayDeriver.php b/src/Plugin/search_api/display/SearchApiPageDisplayDeriver.php
index 095f50e..e3e7721 100644
--- a/src/Plugin/search_api/display/SearchApiPageDisplayDeriver.php
+++ b/src/Plugin/search_api/display/SearchApiPageDisplayDeriver.php
@@ -21,17 +21,17 @@ class SearchApiPageDisplayDeriver extends DisplayDeriverBase {
     if (!isset($this->derivatives[$base_plugin_id])) {
       $plugin_derivatives = [];
 
-      foreach ($this->entityTypeManager->getStorage('search_api_page')
-                 ->loadMultiple() as $search_api_page) {
+      $search_api_page_storage = $this->entityTypeManager->getStorage('search_api_page');
+      foreach ($search_api_page_storage->loadMultiple() as $search_api_page) {
 
         $machine_name = $search_api_page->id();
         $plugin_derivatives[$machine_name] = array(
-            'id' => $base_plugin_id . PluginBase::DERIVATIVE_SEPARATOR . $machine_name,
-            'label' => $search_api_page->label(),
-            'description' => $this->t('Represents the search api page %search_api_page_title.', array('%search_api_page_title' => $search_api_page->label())),
-            'index' => $search_api_page->getIndex(),
-            'search_api_page' => $search_api_page,
-          ) + $base_plugin_definition;
+          'id' => $base_plugin_id . PluginBase::DERIVATIVE_SEPARATOR . $machine_name,
+          'label' => $search_api_page->label(),
+          'description' => $this->t('Represents the search api page %search_api_page_title.', array('%search_api_page_title' => $search_api_page->label())),
+          'index' => $search_api_page->getIndex(),
+          'search_api_page' => $search_api_page,
+        ) + $base_plugin_definition;
       }
       $this->derivatives[$base_plugin_id] = $plugin_derivatives;
     }