diff --git a/lib/http/rpc.js b/lib/http/rpc.js
index cc0f4400..3ae80147 100644
--- a/lib/http/rpc.js
+++ b/lib/http/rpc.js
@@ -971,8 +971,8 @@ RPC.prototype.verifyTXOutProof = co(function* verifyTXOutProof(args, help) {
   if (!entry)
     throw new RPCError(errs.MISC_ERROR, 'Block not found in chain.');
 
-  for (i = 0; i < block.matches.length; i++) {
-    hash = block.matches[i];
+  for (i = 0; i < block.tree.matches.length; i++) {
+    hash = block.tree.matches[i];
     out.push(util.revHex(hash));
   }