From 04e6c6d4a3a5789c2a065fcfcdb53b65f6e3364a Mon Sep 17 00:00:00 2001
From: Tim van Dijen <tvdijen@gmail.com>
Date: Fri, 6 Sep 2024 22:08:02 +0200
Subject: [PATCH] Avoid broken XML-output when no prefix is set

---
 src/Attribute.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Attribute.php b/src/Attribute.php
index 122e1ff..f1144a9 100644
--- a/src/Attribute.php
+++ b/src/Attribute.php
@@ -108,7 +108,9 @@ public function toXML(DOMElement $parent): DOMElement
     {
         $parent->setAttributeNS(
             $this->getNamespaceURI(),
-            $this->getNamespacePrefix() . ':' . $this->getAttrName(),
+            ($this->getNamespacePrefix() !== null)
+                ? ($this->getNamespacePrefix() . ':' . $this->getAttrName())
+                : $this->getAttrName(),
             $this->getAttrValue(),
         );