--- /usr/bin/mk-sbuild  2013-10-14 22:02:00.000000000 +0200
+++ /tmp/mk-sbuild      2013-11-24 22:56:49.000000000 +0100
@@ -618,7 +618,11 @@
 sudo mkdir -p -m 0700 "$MNT"/root/.gnupg
 
 # debootstrap the chroot
-sudo ${proxy:+"http_proxy=${proxy}"} "$DEBOOTSTRAP_COMMAND" --arch="$CHROOT_ARCH" $variant_opt $debootstrap_opts "$RELEASE" "$MNT" "${DEBOOTSTRAP_MIRROR:-http://archive.ubuntu.com/ubuntu}"
+if [ "$CHROOT_ARCH" = "armhf" ]; then
+       sudo ${proxy:+"http_proxy=${proxy}"} "$DEBOOTSTRAP_COMMAND" --arch="$CHROOT_ARCH" $variant_opt $debootstrap_opts "$RELEASE" "$MNT" "${DEBOOTSTRAP_MIRROR:-http://archive.ubuntu.com/ubuntu}" "${DEBOOTSTRAP_KEYRING}"
+else
+       sudo ${proxy:+"http_proxy=${proxy}"} "$DEBOOTSTRAP_COMMAND" --arch="$CHROOT_ARCH" $variant_opt $debootstrap_opts "$RELEASE" "$MNT" "${DEBOOTSTRAP_MIRROR:-http://archive.ubuntu.com/ubuntu}"
+fi
 
 # Update the package sources
 TEMP_SOURCES=`mktemp -t sources-XXXXXX`