diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index e93cca9..057faa8 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -313,7 +313,7 @@ void thread_group_cputime(struct task_struct *tsk, struct task_cputime *times)
 		task_cputime(t, &utime, &stime);
 		times->utime += utime;
 		times->stime += stime;
-		times->sum_exec_runtime += task_sched_runtime(t);
+		times->sum_exec_runtime += t->se.sum_exec_runtime;
 	} while_each_thread(tsk, t);
 out:
 	rcu_read_unlock();