diff --git a/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh b/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
index 1d89640a4ef..38019e89e5f 100755
--- a/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
@@ -40,13 +40,15 @@ xiaomi_initial_setup()
 		return 0
 	fi
 
-	fw_setenv boot_wait on
-	fw_setenv uart_en 1
-	fw_setenv flag_boot_rootfs 0
-	fw_setenv flag_last_success 1
-	fw_setenv flag_boot_success 1
-	fw_setenv flag_try_sys1_failed 8
-	fw_setenv flag_try_sys2_failed 8
+	fw_setenv -s - <<-EOF
+		boot_wait on
+		uart_en 1
+		flag_boot_rootfs 0
+		flag_last_success 1
+		flag_boot_success 1
+		flag_try_sys1_failed 8
+		flag_try_sys2_failed 8
+	EOF
 
 	local board=$(board_name)
 	case "$board" in