diff --git a/net/core/dev.c b/net/core/dev.c
index c883b17ee0fe2c8a7ca2f2867560ba74004790a7..4f8b92d81d107fc9acd2499297435cbd9e9b5c67 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -9282,7 +9282,7 @@ static struct hlist_head * __net_init netdev_create_hash(void)
 static int __net_init netdev_init(struct net *net)
 {
 	BUILD_BUG_ON(GRO_HASH_BUCKETS >
-			FIELD_SIZEOF(struct napi_struct, gro_bitmask));
+		     8 * FIELD_SIZEOF(struct napi_struct, gro_bitmask));
 
 	if (net != &init_net)
 		INIT_LIST_HEAD(&net->dev_base_head);