diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile
index 2310e99..9486717 100644
--- a/drivers/mailbox/Makefile
+++ b/drivers/mailbox/Makefile
@@ -10,6 +10,8 @@
 
 obj-$(CONFIG_OMAP2PLUS_MBOX)	+= omap-mailbox.o
 
+obj-$(CONFIG_ROCKCHIP_MBOX)	+= rockchip-mailbox.o
+
 obj-$(CONFIG_PCC)		+= pcc.o
 
 obj-$(CONFIG_ALTERA_MBOX)	+= mailbox-altera.o