diff --git a/Whatsapp_Chat_Exporter/utility.py b/Whatsapp_Chat_Exporter/utility.py
index 2d83cd0..3128336 100644
--- a/Whatsapp_Chat_Exporter/utility.py
+++ b/Whatsapp_Chat_Exporter/utility.py
@@ -132,7 +132,7 @@ def import_from_json(json_file, data):
 
 
 def get_file_name(contact: str, chat: ChatStore):
-    if "@" not in contact:
+    if "@" not in contact and contact not in ("000000000000000", "000000000000001"):
         raise ValueError("Unexpected contact format: " + contact)
     phone_number = contact.split('@')[0]
     if "-" in contact: