diff --git a/lib/bcoin/http/rpc.js b/lib/bcoin/http/rpc.js
index 67a45ef5..0d097a9a 100644
--- a/lib/bcoin/http/rpc.js
+++ b/lib/bcoin/http/rpc.js
@@ -986,6 +986,12 @@ RPC.prototype.getchaintips = function getchaintips(args, callback) {
 
 RPC.prototype._findFork = function _findFork(entry, callback) {
   (function next(err, entry) {
+    if (err)
+      return callback(err);
+
+    if (!entry)
+      return callback(new Error('Fork not found.'));
+
     entry.isMainChain(function(err, main) {
       if (err)
         return callback(err);