diff --git a/net/core/dev.c b/net/core/dev.c
index 8b1d886..a4ccd47 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1285,7 +1285,7 @@
 	return __dev_close_many(&single);
 }
 
-int dev_close_many(struct list_head *head)
+static int dev_close_many(struct list_head *head)
 {
 	struct net_device *dev, *tmp;
 	LIST_HEAD(tmp_list);