diff --git a/drivers/rtc/ds1556.c b/drivers/rtc/ds1556.c
index 4365cfb..2c496f5 100644
--- a/drivers/rtc/ds1556.c
+++ b/drivers/rtc/ds1556.c
@@ -69,7 +69,7 @@
 
 /* ------------------------------------------------------------------------- */
 
-void rtc_get( struct rtc_time *tmp )
+int rtc_get( struct rtc_time *tmp )
 {
 	uchar sec, min, hour;
 	uchar mday, wday, mon, year;
@@ -118,6 +118,7 @@
 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec );
 #endif
+	return 0;
 }
 
 void rtc_set( struct rtc_time *tmp )