diff --git a/includes/class-cao.php b/includes/class-cao.php
index a47f0da..131374e 100644
--- a/includes/class-cao.php
+++ b/includes/class-cao.php
@@ -113,23 +113,24 @@ public function check_order() {
 					$old_date        = apply_filters( 'woo_cao_date_order', $old_date, $gateway, $mode );
 					$old_date_format = date( 'Y-m-d 00:00:00', $old_date );
 
-					$orders = $wpdb->get_results(
-						$wpdb->prepare(
-							"
-							SELECT posts.ID
-							FROM $wpdb->posts as posts
-							INNER JOIN $wpdb->postmeta as meta
-							ON posts.ID = meta.post_id
-							WHERE posts.post_type = 'shop_order'
-							AND posts.post_status = 'wc-on-hold'
-							AND posts.post_date < %s
-							AND meta.meta_key = '_payment_method'
-							AND meta.meta_value = %s
-						",
-							$old_date_format,
-							$gateway
-						)
+					// SQL - PREPARATION
+					$req = $wpdb->prepare( "
+						SELECT posts.ID
+						FROM $wpdb->posts as posts
+						INNER JOIN $wpdb->postmeta as meta
+						ON posts.ID = meta.post_id
+						WHERE posts.post_type = 'shop_order'
+						AND posts.post_status = 'wc-on-hold'
+						AND posts.post_date < %s
+						AND meta.meta_key = '_payment_method'
+						AND meta.meta_value = %s",
+						$old_date_format,
+						$gateway
 					);
+
+					$req = apply_filters( 'woo_cao_sql_req', $req, $gateway, $mode );
+
+					$orders = $wpdb->get_results( $req );
 					if ( $orders ) {
 						foreach ( $orders as $order ) {
 							// Cancel order.