diff --git a/config/sources/families/spacemit.conf b/config/sources/families/spacemit.conf
index 26a72a54c5..ba15d9a262 100644
--- a/config/sources/families/spacemit.conf
+++ b/config/sources/families/spacemit.conf
@@ -66,7 +66,7 @@ pre_prepare_partitions() {
 
 write_uboot_platform() {
 	local device=${2}
-	if [ -b ${2}boot0 ]; then
+	if [[ -b "${2}boot0" ]]; then
 		echo "eMMC"
 		DEVICE=`ls /dev/mmcblk*boot0 | sed 's/^.....//'`
 		echo 0 > /sys/block/${DEVICE}/force_ro