diff --git a/buzzer.sh b/buzzer.sh
index 69292df..178293c 100755
--- a/buzzer.sh
+++ b/buzzer.sh
@@ -30,6 +30,7 @@ while true; do
 
 		while [ "$swupstat" -eq 1 ]; do
 			echo "On air!"
+			swupstat="$($cmdgpio read $swupgpio)"
 			sleep 0.1
 		done