diff --git a/app/Transformers/RecurringInvoiceInvitationTransformer.php b/app/Transformers/RecurringInvoiceInvitationTransformer.php
index 43f0682c56fb..98bb3b28152f 100644
--- a/app/Transformers/RecurringInvoiceInvitationTransformer.php
+++ b/app/Transformers/RecurringInvoiceInvitationTransformer.php
@@ -31,7 +31,7 @@ class RecurringInvoiceInvitationTransformer extends EntityTransformer
             'updated_at'        => (int) $invitation->updated_at,
             'archived_at'       => (int) $invitation->deleted_at,
             'created_at'       => (int) $invitation->created_at,
-            'email_status'      => $invitation->email_status,
+            'email_status'      => $invitation->email_status ?: '',
             'email_error'       => (string)$invitation->email_error,
         ];
     }