diff --git a/nixos/modules/impermanence/default.nix b/nixos/modules/impermanence/default.nix
index fc1a6dc..b3e1152 100644
--- a/nixos/modules/impermanence/default.nix
+++ b/nixos/modules/impermanence/default.nix
@@ -18,11 +18,11 @@
 	{ file = "/var/keys/secret_file"; parentDirectory = { mode = "u=rwx,g=,o="; }; }
 	];
     };
-    systemd.tmpfiles.rules = {
+    systemd.tmpfiles.rules = [
 	"d /persist/home/ 0777 root root -" # /persist/home created, owned by root
 	"d /persist/home/${username} 0700 ${username} users -" # /persist/home/<user> created, owned by that user
 	"d /persist/nixos-config/ 0700 ${username} users -"
-    }
+    ]
 
     programs.fuse.userAllowOther = true;
     boot.initrd.postDeviceCommands = lib.mkAfter ''