diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
index 7584b773dd..f0d0c20b90 100644
--- a/package/base-files/files/lib/upgrade/common.sh
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -113,7 +113,7 @@ get_image() {
 }
 
 get_magic_word() {
-	get_image "$1" | dd bs=2 count=1 2>/dev/null | hexdump | awk '$2 { print $2 }'
+	get_image "$1" | dd bs=2 count=1 2>/dev/null | hexdump -C | awk '$2 { print $2 $3 }'
 }
 
 refresh_mtd_partitions() {
diff --git a/target/linux/x86/base-files/lib/upgrade/platform.sh b/target/linux/x86/base-files/lib/upgrade/platform.sh
index ffd0b93ab4..f4c8334f36 100644
--- a/target/linux/x86/base-files/lib/upgrade/platform.sh
+++ b/target/linux/x86/base-files/lib/upgrade/platform.sh
@@ -2,7 +2,7 @@ platform_check_image() {
 	[ "$ARGC" -gt 1 ] && return 1
 
 	case "$(get_magic_word "$1")" in
-		48eb) return 0;;
+		eb48) return 0;;
 		*)
 			echo "Invalid image type"
 			return 1