Index: /trunk/doc/manual/Makefile.kmk
===================================================================
--- /trunk/doc/manual/Makefile.kmk	(revision 56526)
+++ /trunk/doc/manual/Makefile.kmk	(revision 56527)
@@ -682,5 +682,5 @@
 		$$(VBOX_XML_CATALOG) $$(VBOX_XML_CATALOG_DOCBOOK) $$(MAKEFILE_CURRENT) | $$$$(dir $$$$@)
 	$$(call MSG_L1,Validating $$<)
-	$$(VBOX_XMLLINT_WITH_CAT) $$(VBOX_XMLLINT_OPTS) --dtdvalid $$(VBOX_PATH_DOCBOOK_DTD)/docbookx.dtd \
+	$$(QUIET)$$(VBOX_XMLLINT_WITH_CAT) $$(VBOX_XMLLINT_OPTS) --dtdvalid $$(VBOX_PATH_DOCBOOK_DTD)/docbookx.dtd \
 		--xinclude --noout $$<
 	$$(QUIET)$$(APPEND) -t "$$@" "done"