diff --git a/includes/gateways/cod/class-wc-gateway-cod.php b/includes/gateways/cod/class-wc-gateway-cod.php
index 9d33971aca0..9509a7682bb 100644
--- a/includes/gateways/cod/class-wc-gateway-cod.php
+++ b/includes/gateways/cod/class-wc-gateway-cod.php
@@ -117,9 +117,9 @@ class WC_Gateway_COD extends WC_Payment_Gateway {
 
 			$check_method = false;
 
-			if ( is_page( wc_get_page_id( 'checkout' ) ) && ! empty( $wp->query_vars['order-pay'] ) ) {
+			if ( is_page( wc_get_page_id( 'checkout' ) ) && 0 < get_query_var( 'order-pay' ) ) {
 
-				$order_id = absint( $wp->query_vars['order-pay'] );
+				$order_id = absint( get_query_var( 'order-pay' ) );
 				$order    = new WC_Order( $order_id );
 
 				if ( $order->shipping_method )
@@ -150,6 +150,7 @@ class WC_Gateway_COD extends WC_Payment_Gateway {
 		return parent::is_available();
 	}
 
+
     /**
      * Process the payment and return the result
      *