diff --git a/js/generate.js b/js/generate.js
index 2d698c6..a403c31 100644
--- a/js/generate.js
+++ b/js/generate.js
@@ -7,10 +7,10 @@
  */
 
 
-const createHTMLString = require( './createHTMLString.js' );
+const createHTMLString = require( './createHTMLString' );
 const fs = require( 'fs' );
 const fsExtra = require( 'fs-extra' );
-const getFromSimInMain = require( './getFromSimInMain.js' );
+const getFromSimInMain = require( './getFromSimInMain' );
 
 // resolve image and doc paths as constants
 
diff --git a/js/getFromSimInMain.js b/js/getFromSimInMain.js
index 3300a4b..af77dc6 100644
--- a/js/getFromSimInMain.js
+++ b/js/getFromSimInMain.js
@@ -25,7 +25,7 @@ const _ = require( 'lodash' );
 const assert = require( 'assert' );
 const fs = require( 'fs' );
 const puppeteer = require( 'puppeteer' );
-const withServer = require( '../../perennial/js/common/withServer.js' );
+const withServer = require( '../../perennial/js/common/withServer' );
 
 // Helper function to get the sim list from perennial
 const getSims = function() {