diff --git a/home-manager/wm/river.nix b/home-manager/wm/river.nix
index 9bfe95c..0d2261f 100644
--- a/home-manager/wm/river.nix
+++ b/home-manager/wm/river.nix
@@ -89,6 +89,7 @@ in
           # audio volume control
           "None XF86AudioLowerVolume" = "spawn 'wpctl set-volume @DEFAULT_SINK@ 1%-'";
           "None XF86AudioRaiseVolume" = "spawn 'wpctl set-volume @DEFAULT_SINK@ 1%+'";
+          "None XF86AudioMute" = "spawn 'wpctl set-mute @DEFAULT_SINK@ toggle'";
         };
       };
       map-pointer = {