diff --git a/lib/Drupal/masquerade/Plugin/Block/MasqueradeBlock.php b/lib/Drupal/masquerade/Plugin/Block/MasqueradeBlock.php
index 08ac0dc..776f873 100644
--- a/lib/Drupal/masquerade/Plugin/Block/MasqueradeBlock.php
+++ b/lib/Drupal/masquerade/Plugin/Block/MasqueradeBlock.php
@@ -62,7 +62,7 @@ class MasqueradeBlock extends BlockBase {
   /**
    * {@inheritdoc}
    */
-  protected function blockBuild() {
+  public function build() {
     return drupal_get_form('masquerade_block_form');
   }