diff --git a/lib/bcoin.js b/lib/bcoin.js
index 30301a25..b5e2a018 100644
--- a/lib/bcoin.js
+++ b/lib/bcoin.js
@@ -30,6 +30,7 @@ const bcoin = exports;
 bcoin.define = function define(name, path) {
   let cache = null;
   Object.defineProperty(bcoin, name, {
+    enumerable: true,
     get() {
       if (!cache)
         cache = require(path);