-unifdef-y := mtd-abi.h
-header-y := inftl-user.h jffs2-user.h mtd-user.h nftl-user.h
+header-y += inftl-user.h
+header-y += jffs2-user.h
+header-y += mtd-abi.h
+header-y += mtd-user.h
+header-y += nftl-user.h
+header-y += ubi-header.h
+header-y += ubi-user.h