diff --git a/includes/gateways/direct-debit/class-wc-gzd-gateway-direct-debit.php b/includes/gateways/direct-debit/class-wc-gzd-gateway-direct-debit.php
index 49e5e8f29..d8d942569 100644
--- a/includes/gateways/direct-debit/class-wc-gzd-gateway-direct-debit.php
+++ b/includes/gateways/direct-debit/class-wc-gzd-gateway-direct-debit.php
@@ -46,6 +46,8 @@ class WC_GZD_Gateway_Direct_Debit extends WC_Payment_Gateway {
 
 	protected $mandate_text;
 
+	protected $instructions;
+
 	public $admin_fields = array();
 
 	/**
diff --git a/includes/gateways/invoice/class-wc-gzd-gateway-invoice.php b/includes/gateways/invoice/class-wc-gzd-gateway-invoice.php
index b3a637291..60747e7e3 100644
--- a/includes/gateways/invoice/class-wc-gzd-gateway-invoice.php
+++ b/includes/gateways/invoice/class-wc-gzd-gateway-invoice.php
@@ -22,6 +22,8 @@ class WC_GZD_Gateway_Invoice extends WC_Payment_Gateway {
 
 	protected $customers_completed;
 
+	protected $instructions;
+	
 	/**
 	 * Constructor for the gateway.
 	 */