diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 9e9875da0a4f979c5389f616b432d218b19fd776..6663cc0789a6bd3f5ad0e57d8cb968ae5d08259a 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -299,6 +299,8 @@ void br_fdb_cleanup(unsigned long _data)
 			unsigned long this_timer;
 			if (f->is_static)
 				continue;
+			if (f->added_by_external_learn)
+				continue;
 			this_timer = f->updated + delay;
 			if (time_before_eq(this_timer, jiffies))
 				fdb_delete(br, f);