diff --git a/src/Form/PostalCodeSettingsForm.php b/src/Form/PostalCodeSettingsForm.php
index 879badc..057279f 100644
--- a/src/Form/PostalCodeSettingsForm.php
+++ b/src/Form/PostalCodeSettingsForm.php
@@ -90,19 +90,19 @@ class PostalCodeSettingsForm extends ConfigFormBase {
 
     $form['postal_code_valid_countries'] = array(
       '#type'           => 'select',
-      '#title'          => t('Valid "Any" Countries'),
+      '#title'          => $this->t('Valid "Any" Countries'),
       '#size'           => 16,
       '#multiple'       => TRUE,
       '#options'        => $options,
       '#default_value'  => $this->postalCodeSettings->get('valid_countries'),
-      '#description'    => '<p>' . t('Select the countr(y/ies) for Postal Code Validation for "Any" field type.') . '</p><p><em>' . t('This is most useful when you have a form that allows, for example, US and Canadian addresses.') . '</em></p><p><strong>' . t('VALIDATION ONLY OCCURS IF THE "VALIDATE" CHECKBOX BELOW IS SELECTED.') . '</strong></p>',
+      '#description'    => '<p>' . $this->t('Select the countr(y/ies) for Postal Code Validation for "Any" field type.') . '</p><p><em>' . t('This is most useful when you have a form that allows, for example, US and Canadian addresses.') . '</em></p><p><strong>' . t('VALIDATION ONLY OCCURS IF THE "VALIDATE" CHECKBOX BELOW IS SELECTED.') . '</strong></p>',
     );
 
     $form['postal_code_validate'] = array(
       '#type'           => 'checkbox',
-      '#title'          => t('Validate'),
+      '#title'          => $this->t('Validate'),
       '#default_value'  => $this->postalCodeSettings->get('validate'),
-      '#description'    => t('Validate submitted postal codes?'),
+      '#description'    => $this->t('Validate submitted postal codes?'),
     );
 
     return parent::buildForm($form, $form_state);