diff --git a/target/linux/kirkwood/image/Makefile b/target/linux/kirkwood/image/Makefile
index 6d8062b330..7bf5fce328 100644
--- a/target/linux/kirkwood/image/Makefile
+++ b/target/linux/kirkwood/image/Makefile
@@ -82,6 +82,9 @@ define Device/linksys_audi
   DEVICE_TITLE := Linksys EA3500 (Audi)
   DEVICE_PACKAGES := kmod-mwl8k swconfig wpad-basic kmod-gpio-button-hotplug
   DEVICE_DTS := kirkwood-linksys-audi
+  PAGESIZE := 512
+  SUBPAGESIZE := 256
+  BLOCKSIZE := 16KiB
   KERNEL_SIZE := 2624k
   KERNEL_IN_UBI :=
   UBINIZE_OPTS := -E 5