diff --git a/devices/t31_lite_chinamobile-hdc-51-a6-v11/general/overlay/usr/sbin/qrscan.sh b/devices/t31_lite_chinamobile-hdc-51-a6-v11/general/overlay/usr/sbin/qrscan.sh
index 9914c7e..a421d62 100755
--- a/devices/t31_lite_chinamobile-hdc-51-a6-v11/general/overlay/usr/sbin/qrscan.sh
+++ b/devices/t31_lite_chinamobile-hdc-51-a6-v11/general/overlay/usr/sbin/qrscan.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-gpio=??  # ??? led, t31_lite_chinamobile-hdc-51-a6-v11
+gpio=53  # BLUE led, t31_lite_chinamobile-hdc-51-a6-v11
 n=0
 
 gpio clear ${gpio} | logger -t gpio