diff --git a/lightningd/chaintopology.c b/lightningd/chaintopology.c
index 5eb725917..4e0302bca 100644
--- a/lightningd/chaintopology.c
+++ b/lightningd/chaintopology.c
@@ -840,7 +840,6 @@ static struct block *new_block(struct chain_topology *topo,
 
 	b->hdr = blk->hdr;
 
-	b->txnums = tal_arr(b, u32, 0);
 	b->full_txs = tal_steal(b, blk->tx);
 
 	return b;
diff --git a/lightningd/chaintopology.h b/lightningd/chaintopology.h
index 4f948b15f..962dd1456 100644
--- a/lightningd/chaintopology.h
+++ b/lightningd/chaintopology.h
@@ -60,10 +60,7 @@ struct block {
 	/* Key for hash table */
 	struct bitcoin_blkid blkid;
 
-	/* And their associated index in the block */
-	u32 *txnums;
-
-	/* Full copy of txs (trimmed to txs list in connect_block) */
+	/* Full copy of txs (freed in filter_block_txs) */
 	struct bitcoin_tx **full_txs;
 };