diff --git a/upload.sh b/upload.sh
index d78f0b8..7607d67 100755
--- a/upload.sh
+++ b/upload.sh
@@ -3,7 +3,7 @@
 #serial=`ls /dev/ | grep cu.usbserial`
 #echo ${serial}
 
-serial=`arduino-cli board list | grep COM | awk '{print $1}'`
+serial=`arduino-cli board list | grep USB | awk '{print $1}'`
 
 echo ${serial}