diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index 4d261a5081..53e7070c99 100755
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -134,39 +134,39 @@ platform_check_image() {
 		}
 		return 0
 		;;
-	wsr-1166)
-		[ "$magic" != "48445230" ] && {
+	ar670w)
+		[ "$magic" != "6d000080" ] && {
 			echo "Invalid image type."
 			return 1
 		}
 		return 0
 		;;
-	ar670w)
-		[ "$magic" != "6d000080" ] && {
+	br-6475nd)
+		[ "$magic" != "43535953" ] && {
 			echo "Invalid image type."
 			return 1
 		}
 		return 0
 		;;
-	cy-swr1100|\
-	dir-610-a1|\
-	dir-645|\
-	dir-860l-b1)
-		[ "$magic" != "5ea3a417" ] && {
+	c20i)
+		[ "$magic" != "03000000" ] && {
 			echo "Invalid image type."
 			return 1
 		}
 		return 0
 		;;
-	br-6475nd)
-		[ "$magic" != "43535953" ] && {
+	cy-swr1100|\
+	dir-610-a1|\
+	dir-645|\
+	dir-860l-b1)
+		[ "$magic" != "5ea3a417" ] && {
 			echo "Invalid image type."
 			return 1
 		}
 		return 0
 		;;
-	c20i)
-		[ "$magic" != "03000000" ] && {
+	wsr-1166)
+		[ "$magic" != "48445230" ] && {
 			echo "Invalid image type."
 			return 1
 		}