diff --git a/etc/modprobe.d/blacklist-hdmi-audio.conf b/etc/modprobe.d/blacklist-hdmi-audio.conf
index 2ff3738a..3bee7d2e 100644
--- a/etc/modprobe.d/blacklist-hdmi-audio.conf
+++ b/etc/modprobe.d/blacklist-hdmi-audio.conf
@@ -1,3 +1,3 @@
 # Prevents HDMI driver from getting loaded and thus it appearing in
-# pavucontrol
+# pavucontrol. Source: https://askubuntu.com/a/1127760
 blacklist snd_hda_codec_hdmi