diff --git a/le-dns/cloudxns-hook.sh b/le-dns/cloudxns-hook.sh
index df35f10..33e1331 100755
--- a/le-dns/cloudxns-hook.sh
+++ b/le-dns/cloudxns-hook.sh
@@ -15,5 +15,8 @@ function deploy_cert {
     local DOMAIN="${1}" KEYFILE="${2}" CERTFILE="${3}" CHAINFILE="${4}"
 }
 
+function unchanged_cert {
+    local DOMAIN="${1}" KEYFILE="${2}" CERTFILE="${3}" FULLCHAINFILE="${4}" CHAINFILE="${5}"
+}
 
 HANDLER=$1; shift; $HANDLER $@