diff --git a/test/browser/grep.html b/test/browser/grep.html
index 0ba47c8533..44bff517df 100644
--- a/test/browser/grep.html
+++ b/test/browser/grep.html
@@ -11,7 +11,7 @@
         if (!expr) throw new Error(msg || 'failed');
       }
     </script>
-    <script src="grep.js"></script>
+    <script src="grep.spec.js"></script>
   </head>
   <body>
     <div id="mocha"></div>
diff --git a/test/browser/index.html b/test/browser/index.html
index 9200b977e5..2331834ecf 100644
--- a/test/browser/index.html
+++ b/test/browser/index.html
@@ -12,9 +12,9 @@
       }
     </script>
     <script src="array.js"></script>
-    <script src="../acceptance/duration.js"></script>
-    <script src="../acceptance/timeout.js"></script>
-    <script src="multiple-done.js"></script>
+    <script src="../acceptance/duration.spec.js"></script>
+    <script src="../acceptance/timeout.spec.js"></script>
+    <script src="multiple-done.spec.js"></script>
     <script>
       onload = function(){
         mocha.checkLeaks();
diff --git a/test/browser/opts.html b/test/browser/opts.html
index ec49a418fc..b646e8610b 100644
--- a/test/browser/opts.html
+++ b/test/browser/opts.html
@@ -16,8 +16,8 @@
         if (!expr) throw new Error(msg || 'failed');
       }
     </script>
-    <script src="opts.js"></script>
-    <script src="../acceptance/globals.js"></script>
+    <script src="opts.spec.js"></script>
+    <script src="../acceptance/globals.spec.js"></script>
     <script>
      onload = function(){
         var runner = mocha.run();
diff --git a/test/browser/stack-trace.html b/test/browser/stack-trace.html
index 0f267dab98..b490bedfa5 100644
--- a/test/browser/stack-trace.html
+++ b/test/browser/stack-trace.html
@@ -11,7 +11,7 @@
             if (!expr) throw err;
         }
     </script>
-    <script src="stack-trace.js"></script>
+    <script src="stack-trace.spec.js"></script>
     <script>
         onload = function() {
             mocha.run();
diff --git a/test/browser/ui.html b/test/browser/ui.html
index 071c7798a0..0ad9301e0d 100644
--- a/test/browser/ui.html
+++ b/test/browser/ui.html
@@ -11,7 +11,7 @@
         if (!expr) throw new Error(msg || 'failed');
       }
     </script>
-    <script src="ui.js"></script>
+    <script src="ui.spec.js"></script>
   </head>
   <body>
     <div id="mocha"></div>
