diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 201be782b5b3..e8b652ebe027 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2178,7 +2178,7 @@ static inline void __update_tg_runnable_avg(struct sched_avg *sa,
 	long contrib;
 
 	/* The fraction of a cpu used by this cfs_rq */
-	contrib = div_u64(sa->runnable_avg_sum << NICE_0_SHIFT,
+	contrib = div_u64((u64)sa->runnable_avg_sum << NICE_0_SHIFT,
 			  sa->runnable_avg_period + 1);
 	contrib -= cfs_rq->tg_runnable_contrib;