diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 7b87f37..c443633 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -6,3 +6,6 @@
 obj-$(CONFIG_RTC_HCTOSYS)	+= hctosys.o
 obj-$(CONFIG_RTC_CLASS)		+= rtc-core.o
 rtc-core-y			:= class.o interface.o
+
+obj-$(CONFIG_RTC_INTF_SYSFS)	+= rtc-sysfs.o
+