diff --git a/feed/mtk_factory_rw/files/mtk_factory_rw.sh b/feed/mtk_factory_rw/files/mtk_factory_rw.sh
index 7657260..e5bd47e 100755
--- a/feed/mtk_factory_rw/files/mtk_factory_rw.sh
+++ b/feed/mtk_factory_rw/files/mtk_factory_rw.sh
@@ -46,6 +46,11 @@
 		lan_mac_offset=0x1F800
 		wan_mac_offset=0x1F806
 		;;
+	*7988*)
+		#2560k - 12 byte
+		lan_mac_offset=0x27FFF4
+		wan_mac_offset=0x27FFFA
+		;;
 	*)
 		lan_mac_offset=0x2A
 		wan_mac_offset=0x24