diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 32ecfa4..6d314c4 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -75,6 +75,7 @@
 	}				parent;
 	struct rcu_head			rcu;
 	unsigned long			vlan_bitmap[BR_VLAN_BITMAP_LEN];
+	unsigned long			untagged_bitmap[BR_VLAN_BITMAP_LEN];
 	u16				num_vlans;
 };