diff --git a/src/components/admin/club/member/MemberCommunicationEditModal.vue b/src/components/admin/club/member/MemberCommunicationEditModal.vue
index cc3540d..b674c00 100644
--- a/src/components/admin/club/member/MemberCommunicationEditModal.vue
+++ b/src/components/admin/club/member/MemberCommunicationEditModal.vue
@@ -136,7 +136,7 @@ export default defineComponent({
         preferred: formData.preferred.checked,
         mobile: formData.mobile?.value,
         email: formData.email?.value,
-        postalCode: formData.postalCode.value,
+        postalCode: formData.postalCode?.value,
         city: formData.city?.value,
         street: formData.street?.value,
         streetNumber: formData.streetNumber?.value,