diff --git a/modules/ppcp-button/src/Helper/ThreeDSecure.php b/modules/ppcp-button/src/Helper/ThreeDSecure.php
index 93091907d..66c89e4be 100644
--- a/modules/ppcp-button/src/Helper/ThreeDSecure.php
+++ b/modules/ppcp-button/src/Helper/ThreeDSecure.php
@@ -67,10 +67,10 @@ class ThreeDSecure {
 			return self::NO_DECISION;
 		}
 
-		if ( ! $payment_source->properties()->brand ?? '' ) {
+		if ( ! ( $payment_source->properties()->brand ?? '' ) ) {
 			return self::NO_DECISION;
 		}
-		if ( ! $payment_source->properties()->authentication_result ?? '' ) {
+		if ( ! ( $payment_source->properties()->authentication_result ?? '' ) ) {
 			return self::NO_DECISION;
 		}