diff --git a/flash/flash_ts100_linux.sh b/flash/flash_ts100_linux.sh
index 2e74c03e..5fac37ba 100755
--- a/flash/flash_ts100_linux.sh
+++ b/flash/flash_ts100_linux.sh
@@ -66,7 +66,7 @@ function wait_for_ts100 {
 
 function mount_ts100 {
     mkdir -p "$DIR_TMP"
-    sudo mount -t msdos -o uid=$UID "$1" "$DIR_TMP"
+    sudo mount -t msdos -o uid=$UID "$DEVICE" "$DIR_TMP"
     if [ $? -ne 0 ]; then
         echo "Failed to mount $DEVICE on $DIR_TMP"
         exit 1