diff --git a/target/linux/realtek/image/rtl839x.mk b/target/linux/realtek/image/rtl839x.mk
index 081c13ff9b..95dae0f861 100644
--- a/target/linux/realtek/image/rtl839x.mk
+++ b/target/linux/realtek/image/rtl839x.mk
@@ -41,7 +41,7 @@ define Device/zyxel_gs1900-48
   IMAGE_SIZE := 13952k
   DEVICE_VENDOR := ZyXEL
   UIMAGE_MAGIC := 0x83800000
-  ZYXEL_VERS := AAHO
+  ZYXEL_VERS := AAHN
   DEVICE_MODEL := GS1900-48
   KERNEL_INITRAMFS := \
 	kernel-bin | \