diff --git a/library/HTMLPurifier/Definition.php b/library/HTMLPurifier/Definition.php
index fbf75877..2670401e 100644
--- a/library/HTMLPurifier/Definition.php
+++ b/library/HTMLPurifier/Definition.php
@@ -152,6 +152,7 @@ class HTMLPurifier_Definition
$this->info['li']->child =
$this->info['div']->child = $e_Flow;
+ $this->info['caption']->child =
$this->info['em']->child =
$this->info['strong']->child =
$this->info['dfn']->child =