--- a/Makefile	Mon Dec 22 23:29:43 2014 +0100
+++ b/Makefile	Mon Dec 22 23:35:48 2014 +0100
@@ -1,7 +1,7 @@
 all:	out/short.html out/short.pdf
 
 html out/short.html: short.txt
-		asciidoc -o out/short.html -f xhtml $<
+		asciidoc -o out/short.html $<
 
 pdf out/short.pdf: short.txt
 		 a2x -D out/ $<