diff --git a/mm/vmstat.c b/mm/vmstat.c
index f389168..a8d6b59 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -998,6 +998,7 @@
 	switch (action) {
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
+		refresh_zone_stat_thresholds();
 		start_cpu_timer(cpu);
 		node_set_state(cpu_to_node(cpu), N_CPU);
 		break;