diff --git a/tools/catalog-bootstrap-prebuilt.js b/tools/catalog-bootstrap-prebuilt.js
index 35a9e9a309..539bb9e346 100644
--- a/tools/catalog-bootstrap-prebuilt.js
+++ b/tools/catalog-bootstrap-prebuilt.js
@@ -1,7 +1,12 @@
 var fs = require('fs');
 var _ = require('underscore');
 var packageCache = require('./package-cache.js');
+var path = require('path');
 
+// The BootstrapCatalogPrebuilt is a catalog that represents the packages used to bootstrap meteor
+// It is meant to work when we are running meteor in the "real" format
+// This catalog is typically never used directly by the user.
+// An instance of this catalog is created in catalog.js
 var BootstrapCatalogPrebuilt = function (uniloadDir) {
   var self = this;
 
@@ -16,9 +21,6 @@ _.extend(BootstrapCatalogPrebuilt.prototype, {
       throw Error("no uniloadDir?");
     self.uniloadDir = options.uniloadDir;
 
-    // Make empty data structures for all the things.
-    self.reset();
-
     self._knownPackages = {};
     _.each(fs.readdirSync(options.uniloadDir), function (package) {
       if (fs.existsSync(path.join(options.uniloadDir, package,