diff --git a/nixos/modules/system/boot/systemd.nix b/nixos/modules/system/boot/systemd.nix
index 6593b1a02430..6f5b15372d75 100644
--- a/nixos/modules/system/boot/systemd.nix
+++ b/nixos/modules/system/boot/systemd.nix
@@ -515,7 +515,7 @@ in
     };
 
     systemd.globalEnvironment = mkOption {
-      type = with types; attrsOf (nullOr (either str package));
+      type = with types; attrsOf (nullOr (either str (either path package)));
       default = {};
       example = { TZ = "CET"; };
       description = ''