diff --git a/types.go b/types.go
index edeb0c5..aa3d12e 100644
--- a/types.go
+++ b/types.go
@@ -1086,8 +1086,8 @@ type (
 	// CardBillingAddress structure
 	CardBillingAddress struct {
 		AddressLine1 string `json:"address_line_1"`
-		AddressLine2 string `json:"address_line_2"`
-		AdminArea2   string `json:"admin_area_2"`
+		AddressLine2 string `json:"address_line_2,omitempty"`
+		AdminArea2   string `json:"admin_area_2,omitempty"`
 		AdminArea1   string `json:"admin_area_1"`
 		PostalCode   string `json:"postal_code"`
 		CountryCode  string `json:"country_code"`