diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile
index 66c38e3..4be736b 100644
--- a/drivers/mailbox/Makefile
+++ b/drivers/mailbox/Makefile
@@ -27,3 +27,5 @@
 obj-$(CONFIG_HI6220_MBOX)	+= hi6220-mailbox.o
 
 obj-$(CONFIG_BCM_PDC_MBOX)	+= bcm-pdc-mailbox.o
+
+obj-$(CONFIG_QTI_RPMH_MBOX)	+= qti-tcs.o