diff --git a/RemexHtml/DOM/DOMBuilder.php b/RemexHtml/DOM/DOMBuilder.php
index <HASH>..<HASH> 100644
--- a/RemexHtml/DOM/DOMBuilder.php
+++ b/RemexHtml/DOM/DOMBuilder.php
@@ -58,7 +58,7 @@ class DOMBuilder implements TreeHandler {
 	private $isFragment;
 
 	/** @var bool */
-	private $coerced;
+	private $coerced = false;
 
 	/**
 	 * @param array $options An associative array of options:
Fix missing initialization for DOMBuilder::$coerced

Because this wasn't initialized, DOMBuilder::isCoerced would return
`null` instead of `false`.  That's still a falsey value, so would only
bite the called if (eg) they explicitly tested against `false`.

Change-Id: Ia<I>b<I>e1d3d<I>efd<I>af3ffb4dabc<I>