diff -rupN --no-dereference pbuilder-0.231/Documentation/Makefile pbuilder-0.231-new/Documentation/Makefile
--- pbuilder-0.231/Documentation/Makefile	2018-11-23 11:51:49.000000000 +0100
+++ pbuilder-0.231-new/Documentation/Makefile	2021-01-19 12:00:32.078137195 +0100
@@ -13,7 +13,7 @@ MASTERPOT=pbuilder-doc.po
 HTMLDOCS= pbuilder-doc.html pbuilder-doc.ja.html pbuilder-doc.fr.html pbuilder-doc.de.html
 PDFDOCS = pbuilder-doc.pdf
 
-all: $(MASTERPOT) $(HTMLDOCS) $(PDFDOCS)
+all: $(MASTERPOT) $(PDFDOCS)
 
 %.html: %.xml pbuilder-doc.xsl
 	xsltproc pbuilder-doc.xsl $< > $@.tmp
@@ -29,9 +29,8 @@ pbuilder-doc.%.po: $(MASTERXML)
 	# requires dblatex package.
 	dblatex --tmpdir=docbuild $<
 
-install: $(HTMLDOCS) $(PDFDOCS)
+install: $(PDFDOCS)
 	install -d -m 755 $(DESTDIR)/usr/share/doc/pbuilder/
-	install -m 644 $(HTMLDOCS) $(DESTDIR)/usr/share/doc/pbuilder/
 	install -m 644 pbuilder-doc.pdf $(DESTDIR)/usr/share/doc/pbuilder/
 
 $(MASTERPOT):