diff --git a/doc/manuals/Makefile b/doc/manuals/Makefile
index 2dfedb2..e809632 100644
--- a/doc/manuals/Makefile
+++ b/doc/manuals/Makefile
@@ -1,39 +1,10 @@
-# XSL stylesheets downloaded from http://docbook.sourceforge.net/release/xsl/current/html/
-# Makefile from BitBake/OpenEmbedded manuals
+TOPDIR = ..
 
-EXTRA_DEPS = gen-ggsn-vty-docbook
-
-topdir = .
-ggsn_reference = $(topdir)/osmoggsn-vty-reference.xml
-manuals = $(ggsn_reference)
-# types = pdf txt rtf ps xhtml html man tex texi dvi
-# types = pdf txt
-types = $(docbooktotypes)
-docbooktotypes = pdf
-# htmlcssfile =
-# htmlcss =
-
-TOPDIR := ..
-ASCIIDOCS := osmoggsn-usermanual
-
+ASCIIDOC = osmoggsn-usermanual.adoc
+ASCIIDOC_DEPS = chapters/*.adoc
 include $(TOPDIR)/build/Makefile.asciidoc.inc
-include $(TOPDIR)/build/Makefile.inc
 
-osmoggsn-usermanual.pdf: chapters/*.adoc
+VTY_REFERENCE = osmoggsn-vty-reference.xml
+include $(TOPDIR)/build/Makefile.vty-reference.inc
 
-clean:
-	-rm -rf $(cleanfiles)
-	-rm osmoggsn-usermanual__*.svg osmoggsn-usermanual__*.png
-	-rm osmoggsn-usermanual.check
-
-gen-ggsn-vty-docbook: FORCE
-	$(call command,xsltproc -o generated/combined1.xml \
-		--stringparam with $(PWD)/../common/vty_additions.xml \
-		$(MERGE_DOC) vty/ggsn_vty_reference.xml, \
-		XSLTPROC,Merging Common VTY)
-	$(call command,xsltproc -o generated/combined2.xml \
-		--stringparam with $(PWD)/vty/ggsn_vty_additions.xml \
-		$(MERGE_DOC) generated/combined1.xml, \
-		XSLTPROC,Merging GGSN VTY)
-	$(call command,xsltproc ../vty_reference.xsl generated/combined2.xml > generated/docbook_vty.xml, \
-		XSLTPROC,Converting GGSN VTY to DocBook)
+include $(TOPDIR)/build/Makefile.common.inc