diff --git a/core/modules/filter/lib/Drupal/filter/Plugin/FilterBase.php b/core/modules/filter/lib/Drupal/filter/Plugin/FilterBase.php
index a37d483..8afe680 100644
--- a/core/modules/filter/lib/Drupal/filter/Plugin/FilterBase.php
+++ b/core/modules/filter/lib/Drupal/filter/Plugin/FilterBase.php
@@ -109,6 +109,13 @@ public function getConfiguration() {
   /**
    * {@inheritdoc}
    */
+  public function getDefaultConfiguration() {
+    return array();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
   public function getType() {
     return $this->pluginDefinition['type'];
   }