diff --git a/check.py b/check.py
index 7e2e354..31dcde5 100755
--- a/check.py
+++ b/check.py
@@ -2,6 +2,7 @@
 
 from datetime import datetime
 import email
+import email.policy
 import os
 import sys
 import stat
@@ -128,7 +129,7 @@ running for nemunaire@nemunai.re""")
 
 
 def readmail(fp):
-    cnt = email.message_from_binary_file(fp)
+    cnt = email.message_from_binary_file(fp, policy=email.policy.default)
     frm = cnt.get("From") or "someone"
     subject = cnt.get("Subject") or "your mail"
     ref = cnt.get("Message-ID") or ""