diff --git a/lib/Element/XmlFragment.php b/lib/Element/XmlFragment.php
index cdf9f3f..94f745b 100644
--- a/lib/Element/XmlFragment.php
+++ b/lib/Element/XmlFragment.php
@@ -134,7 +134,7 @@ public function xmlSerialize(Writer $writer): void
      * $reader->parseInnerTree() will parse the entire sub-tree, and advance to
      * the next element.
      */
-    public static function xmlDeserialize(Reader $reader): XmlFragment
+    public static function xmlDeserialize(Reader $reader)
     {
         $result = new self($reader->readInnerXml());
         $reader->next();