diff --git a/nixos/modules/tasks/filesystems/zfs.nix b/nixos/modules/tasks/filesystems/zfs.nix
index 21c30305188..376d6530f36 100644
--- a/nixos/modules/tasks/filesystems/zfs.nix
+++ b/nixos/modules/tasks/filesystems/zfs.nix
@@ -103,6 +103,7 @@ in
         readOnly = true;
         type = types.package;
         default = if config.boot.zfs.enableUnstable then pkgs.zfsUnstable else pkgs.zfs;
+        defaultText = "if config.boot.zfs.enableUnstable then pkgs.zfsUnstable else pkgs.zfs";
         description = "Configured ZFS userland tools package.";
       };