diff --git a/Makefile b/Makefile
index 59b7ea0..19edca3 100644
--- a/Makefile
+++ b/Makefile
@@ -85,8 +85,7 @@ endif
 
 # markdown dialect...
 #
-# XXX still needs some tweaking...
-MD_FORMAT ?= markdown_github
+MD_FORMAT ?= gfm
 
 
 # debug output...
@@ -173,26 +172,11 @@ LN := cp -l
 # 			- |..|	- verbatim does not work...
 # 			- ||	- parts of doc omitted...
 #			- verbatim blocks get merged sometimes...
+#			- does not resolve \jobname in include...
 #			- ...
 #		...not sure if this can be tweaked...
-#%.md: %.tex
-#	pandoc -t $(MD_FORMAT) -s $< -o $@
-
-# XXX EXPERIMENTAL...
-# XXX revise:
-#		...for this to work we need to replace:
-#			\documentclass{ltxdoc}
-#		to:
-#			\documentclass[markdownextra]{internet}
-# XXX install the internet class...
-#			https://github.com/loopspace/latex-to-internet
-#		...needs testing...
 %.md: %.tex
-	cat $< \
-		| sed 's/documentclass{ltxdoc}/documentclass[markdownextra]{internet}/' \
-		> $<.tmp
-	mv $<{.tmp,}
-	$(TEX) $< $(STDERR)
+	pandoc -t $(MD_FORMAT) -s $< -o $@
 
 
 # meta-section...