diff --git a/nixos/common/services/snapper.nix b/nixos/common/services/snapper.nix
index 71f8557c..959ef0a9 100644
--- a/nixos/common/services/snapper.nix
+++ b/nixos/common/services/snapper.nix
@@ -1,6 +1,12 @@
 { lib, pkgs, desktop, ... }: {
     environment.systemPackages = [ pkgs.snapper ]  ++ lib.optional (builtins.isString desktop) pkgs.snapper-gui;
 
+    # You need to make the snapshot directories manually:
+    #     sudo rm -rf /.snapshots /home/.snapshots /nix/.snapshots
+    #     sudo btrfs subvolume create /.snapshots
+    #     sudo btrfs subvolume create /nix/.snapshots
+    #     sudo btrfs subvolume create /home/.snapshots
+
     services.snapper = {
         snapshotRootOnBoot = true;
         cleanupInterval = "1d";