diff --git a/groundstation/aprs-cubesatsim.sh b/groundstation/aprs-cubesatsim.sh
index 5bd93cbb..1ae0b5d6 100755
--- a/groundstation/aprs-cubesatsim.sh
+++ b/groundstation/aprs-cubesatsim.sh
@@ -32,7 +32,7 @@ direwolf -t 0 &
 sleep 5
 
 #rtl_fm -M fm -f 144.39M -s 48k | aplay -D hw:2,0,0 -r 48000 -t raw -f S16_LE -c 1
-rtl_fm -M fm -f 434.9M -s 48k | aplay -D hw:3,0,0 -r 48000 -t raw -f S16_LE -c 1
+rtl_fm -M fm -f 434.9M -s 48k | aplay -D hw:2,0,0 -r 48000 -t raw -f S16_LE -c 1