diff --git a/boost.blocks.inc b/boost.blocks.inc
index 46ac4c0..22a7354 100644
--- a/boost.blocks.inc
+++ b/boost.blocks.inc
@@ -59,8 +59,10 @@ function boost_block_view_status() {
   );
 
   if (file_exists($filename) && user_access('boost flush pages')) {
+    // 1922532 - Variable required to remove warning under PHP 5.4
+    $form = drupal_get_form('boost_block_flush_form');
     $block['content']['flush'] = array(
-      '#markup' => drupal_render(drupal_get_form('boost_block_flush_form')),
+      '#markup' => drupal_render($form),
     );
   }