diff --git a/machines/bakunin/configuration.nix b/machines/bakunin/configuration.nix
index 87fdf3e4..b57bc31d 100644
--- a/machines/bakunin/configuration.nix
+++ b/machines/bakunin/configuration.nix
@@ -67,7 +67,6 @@
   networking.hostName = "bakunin";
   networking.networkmanager.enable = true;
 
-  sound.enable = true;
   hardware.pulseaudio = {
     enable = true;
     zeroconf.discovery.enable = true;
diff --git a/machines/louise/configuration.nix b/machines/louise/configuration.nix
index 81eec8ee..146a5fa5 100644
--- a/machines/louise/configuration.nix
+++ b/machines/louise/configuration.nix
@@ -67,7 +67,6 @@
   networking.hostName = "louise";
   networking.networkmanager.enable = true;
 
-  sound.enable = true;
   hardware.pulseaudio = {
     enable = true;
     zeroconf.discovery.enable = true;
diff --git a/machines/lucia/configuration.nix b/machines/lucia/configuration.nix
index 440096a3..ecb2965d 100644
--- a/machines/lucia/configuration.nix
+++ b/machines/lucia/configuration.nix
@@ -39,12 +39,8 @@ in
   # Set your time zone.
   time.timeZone = "Europe/Berlin";
 
-  # hardware audio support:
-  sound.enable = true;
-
   services = {
 
-
   dokuwiki.sites."wiki.malobeo.org" = {
     enable = true;
     #acl = "* @ALL 8";  # everyone can edit using this config