Index: uspace/drv/time/cmos-rtc/cmos-rtc.c
===================================================================
--- uspace/drv/time/cmos-rtc/cmos-rtc.c	(revision 2703b82459c29868f30e87897b3bc6f79ef7c560)
+++ uspace/drv/time/cmos-rtc/cmos-rtc.c	(revision 709476f4de99092cc5a8c74fcd83b718b7047f07)
@@ -397,5 +397,5 @@
 		t->tm_hour = bin2bcd(t->tm_hour);
 		t->tm_mday = bin2bcd(t->tm_mday);
-		t->tm_mon  = bin2bcd(t->tm_mon + 1);
+		t->tm_mon  = bin2bcd(t->tm_mon);
 		t->tm_year = bin2bcd(t->tm_year);
 	}