diff -urNad postfix-gld.orig/postfix-gld-1.7/debian/rules postfix-gld/postfix-gld-1.7/debian/rules
--- postfix-gld.orig/postfix-gld-1.7/debian/rules	2015-02-08 22:59:46.864350183 +0000
+++ postfix-gld/postfix-gld-1.7/debian/rules	2015-02-08 23:01:28.048858374 +0000
@@ -50,9 +50,9 @@
 	cp -p debian/changelog $(docdir)/changelog.Debian
 	cp -p HISTORY README debian/README.Debian $(docdir)
 	cp -p debian/copyright $(docdir)
-	cd $(docdir) && gzip -9 HISTORY changelog.Debian
+	cd $(docdir) && gzip -9n HISTORY changelog.Debian
 	ln -s HISTORY.gz $(docdir)/changelog.gz
-	gzip -r9 debian/tmp/usr/share/man
+	gzip -r9n debian/tmp/usr/share/man
 	$(STRIP) debian/tmp/usr/sbin/*
 	dpkg-shlibdeps debian/tmp/usr/sbin/*
 	dpkg-gencontrol