diff --git a/src/components/donors/DonorDetail.svelte b/src/components/donors/DonorDetail.svelte
index 0a039551..783b4d1b 100644
--- a/src/components/donors/DonorDetail.svelte
+++ b/src/components/donors/DonorDetail.svelte
@@ -64,6 +64,7 @@
       }
       if (editable.email) editable.email = editable.email;
       if (editable.phone) editable.phone = editable.phone;
+      else editable.phone = null;
       if (editable.middlename) editable.middlename = editable.middlename;
       editable.receiptNeeded = editable.address_checked;
       DonorService.donorControllerPut(original_data.id, editable)