diff --git a/subcommands/backup-auth b/subcommands/backup-auth
index a7f13c4..408cc1d 100755
--- a/subcommands/backup-auth
+++ b/subcommands/backup-auth
@@ -8,12 +8,15 @@ mysql-backup-auth-cmd() {
   declare desc="sets up authentication for backups on the $PLUGIN_SERVICE service"
   local cmd="$PLUGIN_COMMAND_PREFIX:backup-auth" argv=("$@"); [[ ${argv[0]} == "$cmd" ]] && shift 1
   declare SERVICE="$1" AWS_ACCESS_KEY_ID="$2" AWS_SECRET_ACCESS_KEY="$3"
+  shift 3
+  declare OPTIONAL_PARAMETERS="$@"
 
   [[ -z "$SERVICE" ]] && dokku_log_fail "Please specify a name for the service"
   [[ -z "$AWS_ACCESS_KEY_ID" ]] && dokku_log_fail "Please specify an aws access key id"
   [[ -z "$AWS_SECRET_ACCESS_KEY" ]] && dokku_log_fail "Please specify an aws secret access key"
   verify_service_name "$SERVICE"
-  service_backup_auth "$SERVICE" "$AWS_ACCESS_KEY_ID" "$AWS_SECRET_ACCESS_KEY"
+
+  service_backup_auth "$SERVICE" "$AWS_ACCESS_KEY_ID" "$AWS_SECRET_ACCESS_KEY" $OPTIONAL_PARAMETERS
 }
 
 mysql-backup-auth-cmd "$@"