diff --git a/mk/Doxyfile b/mk/Doxyfile
index 08d7ace..1f66830 100644
--- a/mk/Doxyfile
+++ b/mk/Doxyfile
@@ -174,8 +174,6 @@ MAN_LINKS              = NO
 #---------------------------------------------------------------------------
 GENERATE_XML           = NO
 XML_OUTPUT             = xml
-XML_SCHEMA             = 
-XML_DTD                = 
 XML_PROGRAMLISTING     = YES
 #---------------------------------------------------------------------------
 # configuration options for the AutoGen Definitions output