diff --git a/debian/changelog b/debian/changelog
index f91901b..36317de 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -5,6 +5,8 @@ ubuntu-dev-tools (0.139) UNRELEASED; urgency=low
   * sponsor-patch: Determine the task from the UDD branch.
   * Re-add dgetlp. Still needed for downloading source packages from +queue.
     (LP: #919805)
+  * pbuilder-dist: Export DISTRIBUTION and ARCHITECTURE as well as DIST and
+    ARCH. (Closes: #659060, LP: #423609)
 
  -- Stefano Rivera <stefanor@debian.org>  Fri, 23 Dec 2011 22:33:17 +0200
 
diff --git a/pbuilder-dist b/pbuilder-dist
index 6886ee9..96e5f35 100755
--- a/pbuilder-dist
+++ b/pbuilder-dist
@@ -340,11 +340,14 @@ class PbuilderDist:
 
         # Export the distribution and architecture information to the
         # environment so that it is accessible to ~/.pbuilderrc (LP: #628933).
+        # With both common variable name schemes (BTS: #659060).
         return [
             self.auth,
             'HOME=' + os.path.expanduser('~'),
             'ARCHITECTURE=' + self.build_architecture,
             'DISTRIBUTION=' + self.target_distro,
+            'ARCH=' + self.build_architecture,
+            'DIST=' + self.target_distro,
             self.builder,
         ] + arguments