diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 6c2af797f2f92b93cf4ea28d1d5deee4e725f757..744e5936c10d7ec555d1ca621f5bd4be57f1c72b 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1569,7 +1569,7 @@ static struct key_vector *leaf_walk_rcu(struct key_vector **tn, t_key key)
 	do {
 		/* record parent and next child index */
 		pn = n;
-		cindex = key ? get_index(key, pn) : 0;
+		cindex = (key > pn->key) ? get_index(key, pn) : 0;
 
 		if (cindex >> pn->bits)
 			break;