diff --git a/target/linux/ar71xx/image/Makefile b/target/linux/ar71xx/image/Makefile
index 7bf2f27..8132a39 100644
--- a/target/linux/ar71xx/image/Makefile
+++ b/target/linux/ar71xx/image/Makefile
@@ -268,9 +268,9 @@ $(Device/tplink)
   KERNEL_INITRAMFS := copy-file $(KDIR)/vmlinux-initramfs.bin.lzma | loader-kernel | mktplinkfw-initramfs
 endef
 
-define Device/tplink-4m
+define Device/tplink-16m
 $(Device/tplink-nolzma)
-  TPLINK_FLASHLAYOUT := 4M
+  TPLINK_FLASHLAYOUT := 16M
   IMAGE_SIZE := 3904k
 endef
 
@@ -547,7 +547,7 @@ define Device/tl-mr3220-v2
 endef
 
 define Device/tl-mr3420-v1
-    $(Device/tplink-4m)
+    $(Device/tplink-16m)
     BOARDNAME := TL-MR3420
     DEVICE_PROFILE := TLMR3420
     TPLINK_HWID := 0x34200001