diff --git a/desktop.nix b/desktop.nix
index d5c1e20..52c7524 100644
--- a/desktop.nix
+++ b/desktop.nix
@@ -120,6 +120,7 @@
 
   nixpkgs.config.packageOverrides = pkgs: {
     clawsMail = pkgs.clawsMail.override { enablePluginFancy = true; };
+    mumble = pkgs.mumble.override { pulseSupport = true; };
   };
 
   # Enable the X11 windowing system.
@@ -132,4 +133,10 @@
     startGnuPGAgent = true;
     startOpenSSHAgent = false; # pas compatible avec l'agent GnuPG
   };
+
+  hardware.pulseaudio = {
+    enable = true;
+    support32Bit = true;
+  };
+  environment.etc."pulse/daemon.conf".text = "flat-volumes = no";
 }