diff --git a/2021/wireless-audio.csv b/2021/wireless-audio.csv
index de90995..d0b03b9 100644
--- a/2021/wireless-audio.csv
+++ b/2021/wireless-audio.csv
@@ -1,7 +1,7 @@
 "function","band","bank/freq","receiver","audio mixer in","label"
-"headset 1",500,1/1,"incase:4",1,"lect1"
+"headset 1",500,2/1,"incase:4",1,"lect1"
 "headset 2",700,1/1,"incase:2",2,"lect2"
 "stick herald",800,1/1,"incase:3",3,"herald"
 "stick audience",700,1/2,"incase:1",4,"audience"
-"stick backup",500,1/2,"portable:1","6","VOC"
+"stick backup",500,2/2,"portable:1","6","VOC"
 "fosdem box",700,1/3,"portable:2","5","fosbox"