diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index f41f33d..7f817dc 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -32,8 +32,8 @@
 COBJS-$(CONFIG_RTC_DS12887) += ds12887.o
 COBJS-$(CONFIG_RTC_DS1302) += ds1302.o
 COBJS-$(CONFIG_RTC_DS1306) += ds1306.o
-COBJS-$(CONFIG_RTC_DS1307)$(CONFIG_RTC_DS1338) += ds1307.o
-COBJS-y += $(COBJS-yy)
+COBJS-$(CONFIG_RTC_DS1307) += ds1307.o
+COBJS-$(CONFIG_RTC_DS1338) += ds1307.o
 COBJS-$(CONFIG_RTC_DS1337) += ds1337.o
 COBJS-$(CONFIG_RTC_DS1374) += ds1374.o
 COBJS-$(CONFIG_RTC_DS1556) += ds1556.o
@@ -59,7 +59,7 @@
 COBJS-$(CONFIG_RTC_S3C24X0) += s3c24x0_rtc.o
 COBJS-$(CONFIG_RTC_X1205) += x1205.o
 
-COBJS	:= $(COBJS-y)
+COBJS	:= $(sort COBJS-y)
 SRCS	:= $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))