diff --git a/drivers/rtc/hctosys.c b/drivers/rtc/hctosys.c
index bc90b09..29735c2 100644
--- a/drivers/rtc/hctosys.c
+++ b/drivers/rtc/hctosys.c
@@ -24,7 +24,7 @@
 
 int rtc_hctosys_ret = -ENODEV;
 
-static int __init rtc_hctosys(void)
+int rtc_hctosys(void)
 {
 	int err = -ENODEV;
 	struct rtc_time tm;