diff -urNad ratfor.orig/ratfor-1.0/debian/rules ratfor/ratfor-1.0/debian/rules
--- ratfor.orig/ratfor-1.0/debian/rules	2015-02-12 02:57:31.102971326 +0000
+++ ratfor/ratfor-1.0/debian/rules	2015-02-12 02:58:10.088376731 +0000
@@ -55,7 +55,7 @@
 
 	install -d -o root -g root -m 755 debian/tmp/usr/share/man/man1
 	install -o root -g root -m 644 ratfor.1 debian/tmp/usr/share/man/man1
-	gzip -9f debian/tmp/usr/share/man/man1/ratfor.1
+	gzip -9nf debian/tmp/usr/share/man/man1/ratfor.1
 	install -d -o root -g root -m 755 debian/tmp/usr/share/doc/$(package)
 	install -o root -g root -m 644  BUGS\
 	  debian/tmp/usr/share/doc/$(package)
@@ -66,12 +66,12 @@
 	install -d -o root -g root -m 755 debian/tmp/usr/share/doc/$(package)/examples
 	install -o root -g root -m 644 *.r \
 	  debian/tmp/usr/share/doc/$(package)/examples
-	gzip -9f debian/tmp/usr/share/doc/$(package)/examples/*.r
+	gzip -9nf debian/tmp/usr/share/doc/$(package)/examples/*.r
 	install -d -o root -g root -m 755 debian/tmp/DEBIAN
 
 	install -c -m 0644 debian/changelog \
                               debian/tmp/usr/share/doc/$(package)/changelog.Debian 
-	gzip -9 debian/tmp/usr/share/doc/$(package)/changelog.Debian
+	gzip -9n debian/tmp/usr/share/doc/$(package)/changelog.Debian
 	dpkg-shlibdeps ./ratfor                                                
 	dpkg-gencontrol -isp
 	dh_md5sums --tmpdir=debian/tmp