diff --git a/configuration.nix b/configuration.nix
index eaec381..b029ef6 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -37,9 +37,6 @@
   # Rotate logs after 14 days
   services.journald.extraConfig = "SystemMaxFiles=14";
 
-  # Allow propietary software and build packages with Pulseaudio support
-  nixpkgs.config.allowUnfree = true;
-
   # Scrub zpool monthly
   services.zfs.autoScrub = {
     enable = true;
@@ -48,12 +45,12 @@
 
   # Set timezone and synchronize NTP
   time.timeZone = "Europe/Brussels";
-  services.chrony.enable = true;
+  services.timesyncd.enable = true;
 
   # NixOS version
   system.stateVersion = "20.09";
 
-  # Create coolneng user
+  # Create coace user
   users.users.coace = {
     isNormalUser = true;
     home = "/home/coace";