diff --git a/configuration/environment.nix b/configuration/environment.nix
index 7f434fb..2502d33 100644
--- a/configuration/environment.nix
+++ b/configuration/environment.nix
@@ -14,7 +14,7 @@ in
   # The NixOS release to be compatible with for stateful data such as databases.
   system.stateVersion = "18.03";
 
-  #  copies the NixOS configuration file (usually /etc/nixos/configuration.nix) and links it from the resulting system (getting to /run/current-system/configuration.nix)
+  # copies the NixOS configuration file (usually /etc/nixos/configuration.nix) and links it from the resulting system (getting to /run/current-system/configuration.nix)
   system.copySystemConfiguration = true;
 
   # On autorise les paquets non-libres
@@ -23,6 +23,9 @@ in
   # NixOS Hardening
   #security.grsecurity.enable = true;
 
+  # Ménage de /tmp au boot
+  boot.cleanTmpDir = true;
+
   # Paquets
   environment = {
     shellAliases = {