diff --git a/lib/frameworks/mocha.js b/lib/frameworks/mocha.js
index d7d7f1d16..187bc426b 100644
--- a/lib/frameworks/mocha.js
+++ b/lib/frameworks/mocha.js
@@ -75,13 +75,13 @@ exports.run = function(runner, specs) {
     }
   });
 
+  specs.forEach(function(file) {
+    mocha.addFile(file);
+  });
+
   mocha.loadFiles();
 
   runner.runTestPreparer().then(function() {
-    specs.forEach(function(file) {
-      mocha.addFile(file);
-    });
-
     var testResult = [];
 
     var mochaRunner = mocha.run(function(failures) {