diff --git a/pkgs/os-specific/linux/systemd/default.nix b/pkgs/os-specific/linux/systemd/default.nix
index b7beeb727c4..c13f97fcde7 100644
--- a/pkgs/os-specific/linux/systemd/default.nix
+++ b/pkgs/os-specific/linux/systemd/default.nix
@@ -514,8 +514,6 @@ stdenv.mkDerivation {
     rm -rf $out/share/doc
   '';
 
-  enableParallelBuilding = true;
-
   # The interface version prevents NixOS from switching to an
   # incompatible systemd at runtime.  (Switching across reboots is
   # fine, of course.)  It should be increased whenever systemd changes