diff --git a/base/default.nix b/base/default.nix
index 2fb413fb..bbc0c9a8 100644
--- a/base/default.nix
+++ b/base/default.nix
@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ pkgs, lib, ... }:
 
 {
   imports = [
@@ -19,6 +19,8 @@
     ./services/thermald.nix
   ];
 
+  boot.tmp.cleanOnBoot = lib.mkDefault true;
+
   time.timeZone = "Europe/Oslo";
 
   i18n.defaultLocale = "en_US.UTF-8";