diff --git a/systems/hetzner/mail.nix b/systems/hetzner/mail.nix
index 4312983..35016cb 100644
--- a/systems/hetzner/mail.nix
+++ b/systems/hetzner/mail.nix
@@ -62,8 +62,6 @@
       enable = true;
       # index new email as they arrive
       autoIndex = true;
-      # this only applies to plain text attachments, binary attachments are never indexed
-      indexAttachments = true;
       enforced = "body";
     };