diff --git a/modules/home/impermanence.nix b/modules/home/impermanence.nix
index b2dee21..8dd5e97 100644
--- a/modules/home/impermanence.nix
+++ b/modules/home/impermanence.nix
@@ -8,7 +8,7 @@ let
         # fs-diff.sh
         set -euo pipefail
 
-        sudo mkdir /btrfs_tmp
+        sudo mkdir -p /btrfs_tmp
         sudo mount -o subvol=/ /dev/mapper/crypted /btrfs_tmp
 
         OLD_TRANSID=$(sudo btrfs subvolume find-new /btrfs_tmp/root-blank 9999999)