diff --git a/target/linux/mvebu/base-files/lib/upgrade/platform.sh b/target/linux/mvebu/base-files/lib/upgrade/platform.sh
index 981fa2aa2e..58e7d83e4e 100755
--- a/target/linux/mvebu/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mvebu/base-files/lib/upgrade/platform.sh
@@ -11,7 +11,7 @@ platform_check_image() {
 	case "$(board_name)" in
 	cznic,turris-omnia|globalscale,espressobin|globalscale,espressobin-emmc|globalscale,espressobin-v7|globalscale,espressobin-v7-emmc|\
 	marvell,armada8040-mcbin|solidrun,clearfog-base-a1|solidrun,clearfog-pro-a1)
-		platform_check_image_sdcard "$ARGV"
+		platform_check_image_sdcard "$1"
 		;;
 	*)
 		return 0