diff --git a/src/view/domconverter.js b/src/view/domconverter.js
index cc1eb92ba..f0723a718 100644
--- a/src/view/domconverter.js
+++ b/src/view/domconverter.js
@@ -224,9 +224,8 @@ export default class DomConverter {
 				return domElement;
 			} else {
 				// Create DOM element.
-				const namespace = viewNode.getAttribute( 'xmlns' );
-				if ( namespace !== undefined ) {
-					domElement = domDocument.createElementNS( namespace, viewNode.name );
+				if ( viewNode.hasAttribute( 'xmlns' ) ) {
+					domElement = domDocument.createElementNS( viewNode.getAttribute( 'xmlns' ), viewNode.name );
 				} else {
 					domElement = domDocument.createElement( viewNode.name );
 				}