diff --git a/target/linux/bcm27xx/base-files/lib/upgrade/platform.sh b/target/linux/bcm27xx/base-files/lib/upgrade/platform.sh
index 956bc1c7886..3182a555a96 100644
--- a/target/linux/bcm27xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/bcm27xx/base-files/lib/upgrade/platform.sh
@@ -90,7 +90,7 @@ platform_copy_config() {
 
 	if export_partdevice partdev 1; then
 		mkdir -p /boot
-		[ -f "/boot/kernel*.img" ] || mount -t vfat -o rw,noatime "/dev/$partdev" /boot
+		[ -f /boot/kernel*.img ] || mount -t vfat -o rw,noatime "/dev/$partdev" /boot
 		cp -af "$UPGRADE_BACKUP" "/boot/$BACKUP_FILE"
 		tar -C / -zxvf "$UPGRADE_BACKUP" boot/cmdline.txt boot/config.txt
 		sync