diff -urNad tp-smapi.orig/tp-smapi-0.41/debian/rules tp-smapi/tp-smapi-0.41/debian/rules
--- tp-smapi.orig/tp-smapi-0.41/debian/rules	2015-02-12 12:32:41.685367935 +0000
+++ tp-smapi/tp-smapi-0.41/debian/rules	2015-02-12 12:37:32.530138621 +0000
@@ -18,6 +18,8 @@
 
 sversion:=$(shell dpkg-parsechangelog|grep "^Version:"|cut -d" " -f2|rev|cut -d- -f2-|rev|cut -d':' -f2)
 
+BUILD_DATE := $(shell dpkg-parsechangelog --show-field Date)
+
 ### KERNEL SETUP
 ### Setup the stuff needed for making kernel module packages
 ### taken from /usr/share/kernel-package/sample.module.rules
@@ -82,7 +84,7 @@
 		debian/README.Debian \
 		debian/compat debian/$(psource)/usr/src/modules/$(sname)/debian/
 	install -m 0755 debian/rules.modules debian/$(psource)/usr/src/modules/$(sname)/debian/rules
-	cd debian/$(psource)/usr/src && tar c modules | bzip2 -9 > $(sname).tar.bz2 && rm -rf modules
+	cd debian/$(psource)/usr/src && tar --mtime="$(BUILD_DATE)" c modules | bzip2 -9 > $(sname).tar.bz2 && rm -rf modules
 
 	# Prepare dkms.conf from the dkms.conf.in template
 	sed "s/__VERSION__/$(sversion)/g" debian/dkms.conf.in > debian/$(pdkms)/usr/src/$(sname)-$(sversion)/dkms.conf