diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index ef57ab658722c41185208d93ddfaebe7ceb9ff76..dbb7e2cd95eba592f6b7878238ff12979e4c1aa0 100644
--- a/kernel/sched/cpuacct.c
+++ b/kernel/sched/cpuacct.c
@@ -6,6 +6,7 @@
 #include <linux/seq_file.h>
 #include <linux/rcupdate.h>
 #include <linux/kernel_stat.h>
+#include <linux/err.h>
 
 #include "sched.h"