diff --git a/debian/changelog b/debian/changelog
index 729b1edc..b97ff488 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -4,6 +4,8 @@ livecd-rootfs (2.76) UNRELEASED; urgency=low
     - Don't try to install an empty task name when building an image without
       a live task.
     - Fix installation of ubuntu-server fstab removal hook.
+    - Pass --architectures to 'lb config', to make it easier to build images
+      for a different architecture.
 
  -- Colin Watson <cjwatson@ubuntu.com>  Thu, 23 Aug 2012 09:43:38 +0100
 
diff --git a/live-build/auto/config b/live-build/auto/config
index 22434759..7d3a83a2 100755
--- a/live-build/auto/config
+++ b/live-build/auto/config
@@ -300,6 +300,7 @@ esac
 lb config noauto \
 	--mode ubuntu \
 	--distribution "$SUITE" \
+	--architectures "$ARCH" \
 	--bootstrap-keyring ubuntu-keyring \
 	--binary-images "$BINARY_IMAGES" \
 	--memtest "$MEMTEST" \