=== modified file 'backportpackage'
--- backportpackage	2012-03-28 21:25:33 +0000
+++ backportpackage	2012-04-03 15:13:48 +0000
@@ -20,6 +20,7 @@
 
 import optparse
 import os
+import re
 import shutil
 import sys
 import tempfile
@@ -28,6 +29,8 @@
 
 from devscripts.logger import Logger
 
+from distro_info import DebianDistroInfo
+
 from ubuntutools.archive import (SourcePackage, DebianSourcePackage,
                                  UbuntuSourcePackage, DownloadError)
 from ubuntutools.config import UDTConfig, ubu_email
@@ -193,7 +196,15 @@
     return srcpkg
 
 def get_backport_version(version, suffix, upload, release):
-    backport_version = version + ('~%s1' % release)
+    debian_distro_info = DebianDistroInfo()
+    debian_codenames = debian_distro_info.supported()
+    if release in debian_codenames:
+        index = debian_codenames.index(release)
+        release_version = debian_distro_info.supported(result="release")[index]
+        backport_version = version + '~bpo' + \
+                           re.sub("\.", "", release_version) + '+1'
+    else:
+        backport_version = version + ('~%s1' % release)
     if suffix is not None:
         backport_version += suffix
     elif upload and upload.startswith('ppa:'):