diff --git a/makefu/2configs/default.nix b/makefu/2configs/default.nix
index 74d3635bd..bf70ebe08 100644
--- a/makefu/2configs/default.nix
+++ b/makefu/2configs/default.nix
@@ -159,7 +159,10 @@ with import <stockholm/lib>;
     auto-optimise-store = true
   '';
 
-  security.wrappers.sendmail.source = "${pkgs.exim}/bin/sendmail";
+  security.wrappers.sendmail = {
+    source = "${pkgs.exim}/bin/sendmail";
+    setuid = true;
+  };
   services.journald.extraConfig = ''
     SystemMaxUse=1G
     RuntimeMaxUse=128M