diff --git a/mm/Makefile b/mm/Makefile
index 4064f3e..8338473 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -62,3 +62,4 @@
 obj-$(CONFIG_ZBUD)	+= zbud.o
 obj-$(CONFIG_ZSMALLOC)	+= zsmalloc.o
 obj-$(CONFIG_GENERIC_EARLY_IOREMAP) += early_ioremap.o
+obj-$(CONFIG_CMA)	+= cma.o