@@ -104,11 +104,11 @@
  * setting the OFXMLElementBuilder as delegate for the parser.
  */
 @interface OFXMLElementBuilder: OFObject <OFXMLParserDelegate>
 {
 	OFMutableArray OF_GENERIC(OFXMLElement *) *_stack;
-	id <OFXMLElementBuilderDelegate> _delegate;
+	id <OFXMLElementBuilderDelegate> _Nullable _delegate;
 }
 
 /*!
  * The delegate for the OFXMLElementBuilder.
  */