diff --git a/lib/Plugin/Services/WC_EBANX_Capture_Payment.php b/lib/Plugin/Services/WC_EBANX_Capture_Payment.php
index 7a23dabd..45f4aec0 100644
--- a/lib/Plugin/Services/WC_EBANX_Capture_Payment.php
+++ b/lib/Plugin/Services/WC_EBANX_Capture_Payment.php
@@ -55,7 +55,7 @@ public static function add_order_capture_button_css() {
 	 *
 	 * @return array
 	 */
-	public function add_auto_capture_dropdown( $actions ) {
+	public static function add_auto_capture_dropdown( $actions ) {
 		global $theorder;
 
 		if ( is_array( $actions ) && $theorder->get_status() === 'on-hold'
diff --git a/lib/Plugin/Services/WC_EBANX_Checker.php b/lib/Plugin/Services/WC_EBANX_Checker.php
index bf550318..ffb2a40c 100644
--- a/lib/Plugin/Services/WC_EBANX_Checker.php
+++ b/lib/Plugin/Services/WC_EBANX_Checker.php
@@ -286,7 +286,7 @@ public static function check_https_protocol( $context ) {
 	 *
 	 * @throws Exception Param not found exception.
 	 */
-	public function validate_document() {
+	public static function validate_document() {
 		if (
 			\WC_EBANX_Request::has( 'billing_country' )
 			&& \WC_EBANX_Request::read( 'billing_country' ) === 'AR'