diff --git a/core/models.py b/core/models.py
index e61e2050..bdb8b31f 100644
--- a/core/models.py
+++ b/core/models.py
@@ -517,7 +517,7 @@ class Order(ExportModelOperationsMixin("order"), NiceModel):
         verbose_name_plural = _("orders")
 
     def __str__(self) -> str:
-        return f"{self.pk} Order for {self.user.email}"
+        return f"#{self.pk} for {self.user.email if self.user else 'unregistered user'}"
 
     @property
     def is_business(self) -> bool: