diff --git a/pkgs/os-specific/linux/alsa-project/alsa-lib/default.nix b/pkgs/os-specific/linux/alsa-project/alsa-lib/default.nix
index f2cc2b48a7eb..58e5990ae0a6 100644
--- a/pkgs/os-specific/linux/alsa-project/alsa-lib/default.nix
+++ b/pkgs/os-specific/linux/alsa-project/alsa-lib/default.nix
@@ -15,6 +15,10 @@ stdenv.mkDerivation rec {
   };
 
   patches = [
+    # Add a "libs" field to the syntax recognized in the /etc/asound.conf file.
+    # The nixos modules for pulseaudio, jack, and pipewire are leveraging this
+    # "libs" field to declare locations for both native and 32bit plugins, in
+    # order to support apps with 32bit sound running on x86_64 architecture.
     ./alsa-plugin-conf-multilib.patch
   ];