diff --git a/hosts/common/programs/firefox/default.nix b/hosts/common/programs/firefox/default.nix
index fe6f6659a..af69bc913 100644
--- a/hosts/common/programs/firefox/default.nix
+++ b/hosts/common/programs/firefox/default.nix
@@ -230,7 +230,10 @@ in
     sandbox.net = "all";
     sandbox.whitelistAudio = true;
     sandbox.whitelistAvDev = true;  #< it doesn't seem to use pipewire, but direct /dev/videoN (as of 2024/09/12)
-    sandbox.whitelistDbus.user.own = [ "org.mozilla.firefox.*" ];
+    sandbox.whitelistDbus.user.own = [
+      "org.mozilla.firefox.*"
+      "org.mpris.MediaPlayer2.firefox.*"
+    ];
     sandbox.whitelistPortal = [
       "Camera"  # not sure if used
       # "Email"  # not sure if used