diff --git a/mm/Makefile b/mm/Makefile
index 8982504..34b2546 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -15,6 +15,8 @@
 			   $(mmu-y)
 obj-y += init-mm.o
 
+obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o
+
 obj-$(CONFIG_BOUNCE)	+= bounce.o
 obj-$(CONFIG_SWAP)	+= page_io.o swap_state.o swapfile.o thrash.o
 obj-$(CONFIG_HAS_DMA)	+= dmapool.o