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-rw-r--r--src/HTML5/Serializer/OutputRules.php6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/HTML5/Serializer/OutputRules.php b/src/HTML5/Serializer/OutputRules.php
index 7ea7c6a..c009698 100644
--- a/src/HTML5/Serializer/OutputRules.php
+++ b/src/HTML5/Serializer/OutputRules.php
@@ -115,8 +115,10 @@ class OutputRules implements \Masterminds\HTML5\Serializer\RulesInterface
public function document($dom)
{
$this->doctype();
- $this->traverser->node($dom->documentElement);
- $this->nl();
+ if ($dom->documentElement) {
+ $this->traverser->node($dom->documentElement);
+ $this->nl();
+ }
}
protected function doctype()