diff --git a/perf/perf-ui.js b/perf/perf-ui.js
index 9d38eb3c8..eec01ee9f 100644
--- a/perf/perf-ui.js
+++ b/perf/perf-ui.js
@@ -39,6 +39,7 @@
     var result;
     switch (build) {
       case 'lodash-compat':     result = 'dist/lodash.compat.min.js'; break;
+      case 'lodash-legacy':     result = 'dist/lodash.legacy.min.js'; break;
       case 'lodash-mobile':     result = 'dist/lodash.mobile.min.js'; break;
       case 'lodash-underscore': result = 'dist/lodash.underscore.min.js'; break;
       case 'lodash-custom-dev': result = 'lodash.custom.js'; break;
@@ -55,6 +56,7 @@
     var result;
     switch (other) {
       case 'lodash-compat':     result = 'dist/lodash.compat.min.js'; break;
+      case 'lodash-legacy':     result = 'dist/lodash.legacy.min.js'; break;
       case 'lodash-mobile':     result = 'dist/lodash.mobile.min.js'; break;
       case 'lodash-modern':     result = 'dist/lodash.min.js'; break;
       case 'lodash-underscore': result = 'dist/lodash.underscore.min.js'; break;
diff --git a/perf/perf.js b/perf/perf.js
index bb58d45db..abc51a64c 100644
--- a/perf/perf.js
+++ b/perf/perf.js
@@ -67,16 +67,16 @@
   var toString = Object.prototype.toString;
 
   /** The `ui` object */
-  var ui = window.ui || ({
+  var ui = window.ui || (window.ui = {
     'buildPath': basename(filePath, '.js'),
     'otherPath': 'underscore'
   });
 
   /** The Lo-Dash build basename */
-  var buildName = basename(ui.buildPath, '.js');
+  var buildName = window.buildName = basename(ui.buildPath, '.js');
 
   /** The other library basename */
-  var otherName = basename(ui.otherPath, '.js');
+  var otherName = window.otherName = basename(ui.otherPath, '.js');
 
   /** Detect if in a browser environment */
   var isBrowser = isHostType(window, 'document') && isHostType(window, 'navigator');
@@ -256,7 +256,7 @@
     'setup': '\
       var _ = window._,\
           lodash = window.lodash,\
-          belt = this.name == "Lo-Dash" ? lodash : _;\
+          belt = this.name == buildName ? lodash : _;\
       \
       var index,\
           date = new Date,\