diff --git a/include/rtc.h b/include/rtc.h
index 15f3571..2995144 100644
--- a/include/rtc.h
+++ b/include/rtc.h
@@ -52,7 +52,7 @@
 	int tm_isdst;
 };
 
-void rtc_get (struct rtc_time *);
+int rtc_get (struct rtc_time *);
 void rtc_set (struct rtc_time *);
 void rtc_reset (void);