diff --git a/net/core/dev.c b/net/core/dev.c
index eab4ebe3c21c1a9e87a49b0d7944f99afd6b0352..b61075828358c3547720c42a87697d94e3d3fb90 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5591,7 +5591,7 @@ void netif_receive_skb_list(struct list_head *head)
 }
 EXPORT_SYMBOL(netif_receive_skb_list);
 
-DEFINE_PER_CPU(struct work_struct, flush_works);
+static DEFINE_PER_CPU(struct work_struct, flush_works);
 
 /* Network device is going away, flush any packets still pending */
 static void flush_backlog(struct work_struct *work)