diff --git a/systemjs.config.js b/systemjs.config.js
index c2d49d605..cb9794062 100644
--- a/systemjs.config.js
+++ b/systemjs.config.js
@@ -47,6 +47,7 @@
         defaultExtension: 'js'
       },
       'angular2-in-memory-web-api': {
+        main: 'index.js',
         defaultExtension: 'js'
       }
     }