diff --git a/nixos/modules/system/boot/systemd-lib.nix b/nixos/modules/system/boot/systemd-lib.nix
index 7dbf3b25cdb0..7c01f8ea9b7f 100644
--- a/nixos/modules/system/boot/systemd-lib.nix
+++ b/nixos/modules/system/boot/systemd-lib.nix
@@ -10,7 +10,7 @@ rec {
 
   makeUnit = name: unit:
     let
-      pathSafeName = lib.replaceChars ["@" ":" "\\"] ["-" "-" "-"] name;
+      pathSafeName = lib.replaceChars ["@" ":" "\\" "[" "]"] ["-" "-" "-" "" ""] name;
     in
     if unit.enable then
       pkgs.runCommand "unit-${pathSafeName}"