diff --git a/testing/firefox/files/mozconfig b/testing/firefox/files/mozconfig
index ff229204..bddf7b4d 100644
--- a/testing/firefox/files/mozconfig
+++ b/testing/firefox/files/mozconfig
@@ -35,7 +35,7 @@ ac_add_options --disable-gold
 ac_add_options --disable-jemalloc
 ac_add_options --enable-release
 
-# ALSA/PulseAudio (removed in 70)
+# ALSA/PulseAudio (removed in 70 (still present in 70b12(!))
 ac_add_options --disable-pulseaudio
 ac_add_options --enable-alsa