diff --git a/target/linux/ath79/image/nand.mk b/target/linux/ath79/image/nand.mk
index cc775d52b6..00479e4eb5 100644
--- a/target/linux/ath79/image/nand.mk
+++ b/target/linux/ath79/image/nand.mk
@@ -88,12 +88,15 @@ define Device/glinet_gl-ar750s-common
   VID_HDR_OFFSET := 2048
 endef
 
+# NB: The kernel size is intentionally restricted at this time; see commit message
 define Device/glinet_gl-ar750s-nor-nand
   $(Device/glinet_gl-ar750s-common)
   DEVICE_VARIANT := NOR/NAND
   BLOCKSIZE := 128k
+  GL_UBOOT_UBI_OFFSET := 2048k
   IMAGES += factory.img
-  IMAGE/factory.img := append-kernel | pad-to $$$$(KERNEL_SIZE) | append-ubi
+  IMAGE/factory.img := append-kernel | pad-to $$$$(GL_UBOOT_UBI_OFFSET) | \
+			append-ubi | check-kernel-size $$$$(GL_UBOOT_UBI_OFFSET)
   IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
   SUPPORTED_DEVICES += glinet,gl-ar750s-nor
 endef