diff -urNad xjump.orig/xjump-2.7.5/debian/rules xjump/xjump-2.7.5/debian/rules
--- xjump.orig/xjump-2.7.5/debian/rules	2015-02-07 17:23:17.356563102 +0000
+++ xjump/xjump-2.7.5/debian/rules	2015-02-07 17:26:37.217505701 +0000
@@ -26,7 +26,7 @@
 	make install DESTDIR=$(CURDIR)/debian/xjump
 	install -m 644 -o root -g root xjump-icon.xpm debian/xjump/usr/share/pixmaps/
 	cp debian/themes/* debian/xjump/usr/share/games/xjump/
-	for i in debian/xjump/usr/share/games/xjump/*; do gzip -9 $$i; done
+	for i in debian/xjump/usr/share/games/xjump/*; do gzip -9n $$i; done
 	cp debian/xjump.desktop debian/xjump/usr/share/applications/
 	# Encoding is by default UTF-8
 	sed -i '/Encoding=/d' debian/xjump/usr/share/applications/xjump.desktop