diff --git a/core/modules/block/custom_block/custom_block.pages.inc b/core/modules/block/custom_block/custom_block.pages.inc
index eba88fb..75ff6d3 100644
--- a/core/modules/block/custom_block/custom_block.pages.inc
+++ b/core/modules/block/custom_block/custom_block.pages.inc
@@ -100,11 +100,12 @@ function custom_block_delete_form($form, &$form_state, CustomBlock $block) {
   );
 
   $instances = entity_load_multiple_by_properties('block', array('plugin' => 'custom_block:' . $block->uuid->value));
+  $form['instances'] = array(
+    '#type' => 'value',
+    '#value' => $instances,
+  );
+
   if (!empty($instances)) {
-    $form['instances'] = array(
-      '#type' => 'value',
-      '#value' => $instances,
-    );
     $form['message'] = array(
       '#type' => 'markup',
       '#markup' => format_plural(count($instances), 'This will also remove 1 placed block instance.', 'This will also remove @count placed block instances.'),