diff --git a/kernel/sched_clock.c b/kernel/sched_clock.c
index 97159e2..55fca1e 100644
--- a/kernel/sched_clock.c
+++ b/kernel/sched_clock.c
@@ -203,8 +203,8 @@
 		now -= my_scd->tick_raw;
 		now += scd->tick_raw;
 
-		now -= my_scd->tick_gtod;
-		now += scd->tick_gtod;
+		now += my_scd->tick_gtod;
+		now -= scd->tick_gtod;
 
 		__raw_spin_unlock(&my_scd->lock);
 	} else {