diff --git a/tools/xen/build_xva.sh b/tools/xen/build_xva.sh
index c235485eb4..1b41963a27 100755
--- a/tools/xen/build_xva.sh
+++ b/tools/xen/build_xva.sh
@@ -177,7 +177,7 @@ cat <<EOF >$STAGING_DIR/opt/stack/run.sh
 #!/bin/bash
 cd /opt/stack/devstack
 killall screen
-UPLOAD_LEGACY_TTY=yes HOST_IP=$PUB_IP VIRT_DRIVER=xenserver FORCE=yes MULTI_HOST=1 HOST_IP_IFACE=$HOST_IP_IFACE $STACKSH_PARAMS ./stack.sh
+UPLOAD_LEGACY_TTY=yes HOST_IP=$PUB_IP VIRT_DRIVER=xenserver FORCE=yes MULTI_HOST=$MULTI_HOST HOST_IP_IFACE=$HOST_IP_IFACE $STACKSH_PARAMS ./stack.sh
 EOF
 chmod 755 $STAGING_DIR/opt/stack/run.sh