diff --git a/packages/isomorphic-core/index.js b/packages/isomorphic-core/index.js
index 9835ed1f9..b54e88e98 100644
--- a/packages/isomorphic-core/index.js
+++ b/packages/isomorphic-core/index.js
@@ -4,7 +4,7 @@ module.exports = {
     IMAP: 'imap',
   },
   Imap: require('imap'),
-  IMAPConnection: require('src/imap-connection'),
-  IMAPErrors: require('src/imap-errors'),
-  PromiseUtils: require('src/promise-utils'),
+  IMAPConnection: require('./src/imap-connection'),
+  IMAPErrors: require('./src/imap-errors'),
+  PromiseUtils: require('./src/promise-utils'),
 }