diff --git a/nixos/tests/postfix-tlspol.nix b/nixos/tests/postfix-tlspol.nix
index 0d03c1d82052..d4f9f69d9bb5 100644
--- a/nixos/tests/postfix-tlspol.nix
+++ b/nixos/tests/postfix-tlspol.nix
@@ -30,7 +30,7 @@
       machine.log(json.dumps(response, indent=2))
 
       assert response["dane"]["policy"] == "", f"Unexpected DANE policy for localhost: {response["dane"]["policy"]}"
-      assert response["mta-sts"]["policy"] == "", f"Unexpected MTA-STS policy for localhost: {response["mta-sts"]["policy"]}"
+      assert response["mta-sts"]["policy"] == "TEMP", f"Unexpected MTA-STS policy for localhost: {response["mta-sts"]["policy"]}"
 
     machine.log(machine.execute("systemd-analyze security postfix-tlspol.service | grep -v ✓")[1])
   '';