diff --git a/src/Form/AbjsConditionDeleteConfirmForm.php b/src/Form/AbjsConditionDeleteConfirmForm.php
index b681114..ca4dd15 100644
--- a/src/Form/AbjsConditionDeleteConfirmForm.php
+++ b/src/Form/AbjsConditionDeleteConfirmForm.php
@@ -78,10 +78,11 @@ class AbjsConditionDeleteConfirmForm extends ConfirmFormBase {
    * {@inheritdoc}
    */
   public function submitForm(array &$form, FormStateInterface $form_state) {
-    db_delete('abjs_condition')
+    $database = \Drupal::database();
+    $database->delete('abjs_condition')
       ->condition('cid', $this->id)
       ->execute();
-    db_delete('abjs_test_condition')
+    $database->delete('abjs_test_condition')
       ->condition('cid', $this->id)
       ->execute();