diff --git a/modules/ppcp-applepay/src/Assets/ApplePayDataObjectHttp.php b/modules/ppcp-applepay/src/Assets/ApplePayDataObjectHttp.php
index 9b08ecd0b..dad4993d5 100644
--- a/modules/ppcp-applepay/src/Assets/ApplePayDataObjectHttp.php
+++ b/modules/ppcp-applepay/src/Assets/ApplePayDataObjectHttp.php
@@ -160,7 +160,7 @@ class ApplePayDataObjectHttp {
 	 * @return void
 	 */
 	public function validation_data(): void {
-		$data = filter_input( INPUT_POST, 'validation', FILTER_VALIDATE_BOOL );
+		$data = filter_input( INPUT_POST, 'validation', FILTER_VALIDATE_BOOLEAN );
 		if ( ! $data ) {
 			return;
 		}