diff --git a/pkgs/servers/mail/postfix/default.nix b/pkgs/servers/mail/postfix/default.nix
index 838ca7a8d8d..578453c8c56 100644
--- a/pkgs/servers/mail/postfix/default.nix
+++ b/pkgs/servers/mail/postfix/default.nix
@@ -14,6 +14,8 @@ stdenv.mkDerivation rec {
 
   buildInputs = [db openssl cyrus_sasl bison perl];
 
+  hardening_format = false;
+
   patches = [
     ./postfix-2.2.9-db.patch
     ./postfix-2.2.9-lib.patch