diff --git a/bin/ci.sh b/bin/ci.sh
index 99f060c6..8aa81738 100755
--- a/bin/ci.sh
+++ b/bin/ci.sh
@@ -24,9 +24,13 @@ unittest() {
   npm run coveralls
 
   # test compiled version in "dist/npm"
-  ln -nfs ../../dist/npm/core test/node_modules/ripple-lib
-  ln -nfs ../../dist/npm test/node_modules/ripple-api
-  npm test
+  babel -D --optional runtime --ignore "**/node_modules/**" -d test-compiled/ test/
+  echo "--reporter spec --timeout 5000 --slow 500" > test-compiled/mocha.opts
+  mkdir -p test-compiled/node_modules
+  ln -nfs ../../dist/npm/core test-compiled/node_modules/ripple-lib
+  ln -nfs ../../dist/npm test-compiled/node_modules/ripple-api
+  mocha --opts test-compiled/mocha.opts test-compiled
+  rm -rf test-compiled
 }
 
 oneNode() {
diff --git a/test/fixtures/api/rippled/account-tx.js b/test/fixtures/api/rippled/account-tx.js
index da5addbb..156e51c2 100644
--- a/test/fixtures/api/rippled/account-tx.js
+++ b/test/fixtures/api/rippled/account-tx.js
@@ -3,7 +3,7 @@
 const _ = require('lodash');
 const hashes = require('../../hashes');
 const addresses = require('../../addresses');
-const SerializedObject = require('../../../../src/core').SerializedObject;
+const SerializedObject = require('ripple-lib').SerializedObject;
 const AccountSet = require('./tx/account-set.json');
 const NotFound = require('./tx/not-found.json');