diff --git a/src/Form/FlagSearchApiConfigForm.php b/src/Form/FlagSearchApiConfigForm.php
index 6c4d713..a787e46 100644
--- a/src/Form/FlagSearchApiConfigForm.php
+++ b/src/Form/FlagSearchApiConfigForm.php
@@ -34,19 +34,19 @@ class FlagSearchApiConfigForm extends ConfigFormBase {
     $chosen_conf = $this->configFactory->get('flag_search_api.settings');
     $form['options'] = array(
       '#type' => 'fieldset',
-      '#title' => t('Flag Search API Reindexing'),
+      '#title' => $this->t('Flag Search API Reindexing'),
     );
 
     $form['options']['reindex_on_flagging'] = array(
       '#type' => 'checkbox',
-      '#title' => t('Reindex Item on Flagged action'),
+      '#title' => $this->t('Reindex Item on Flagged action'),
       '#default_value' => $chosen_conf->get('reindex_on_flagging'),
-      '#description' => t('Enable or disable reindexing items on flagging action.'),
+      '#description' => $this->t('Enable or disable reindexing items on flagging action.'),
     );
 
     $form['submit'] = array(
       '#type' => 'submit',
-      '#value' => t('Save'),
+      '#value' => $this->t('Save'),
     );
 
     return $form;