diff --git a/nixos/modules/system/boot/luksroot.nix b/nixos/modules/system/boot/luksroot.nix
index 8bd9e71cb3a9..221e90b6f38f 100644
--- a/nixos/modules/system/boot/luksroot.nix
+++ b/nixos/modules/system/boot/luksroot.nix
@@ -513,7 +513,7 @@ let
   postLVM = filterAttrs (n: v: !v.preLVM) luks.devices;
 
 
-  stage1Crypttab = pkgs.writeText "initrd-crypttab" (lib.concatStringsSep "\n" (lib.mapAttrsToList (n: v: let
+  stage1Crypttab = pkgs.writeText "initrd-crypttab" (lib.concatLines (lib.mapAttrsToList (n: v: let
     opts = v.crypttabExtraOpts
       ++ optional v.allowDiscards "discard"
       ++ optionals v.bypassWorkqueues [ "no-read-workqueue" "no-write-workqueue" ]