diff --git a/tools/packaging/templates/runner.bestPractice.html b/tools/packaging/templates/runner.bestPractice.html
index 60c3bbef6f..5f2d4df723 100644
--- a/tools/packaging/templates/runner.bestPractice.html
+++ b/tools/packaging/templates/runner.bestPractice.html
@@ -11,6 +11,7 @@
 </script>
 <script type="text/javascript" src="harness/sth.js"></script>
 <script type="text/javascript" src="harness/sta.js"></script>
+<script type="text/javascript" src="harness/assert.js"></script>
 <script type="text/javascript" src="harness/jqueryprogressbar.js"></script>
 <script type="text/javascript" src="harness/helper.js"></script>
 <script type="text/javascript" src="harness/jquery.base64.js"></script>
diff --git a/tools/packaging/templates/runner.intl402.html b/tools/packaging/templates/runner.intl402.html
index 11f8321f06..989d734bf6 100644
--- a/tools/packaging/templates/runner.intl402.html
+++ b/tools/packaging/templates/runner.intl402.html
@@ -11,6 +11,7 @@
 </script>
 <script type="text/javascript" src="harness/sth.js"></script>
 <script type="text/javascript" src="harness/sta.js"></script>
+<script type="text/javascript" src="harness/assert.js"></script>
 <script type="text/javascript" src="harness/jqueryprogressbar.js"></script>
 <script type="text/javascript" src="harness/helper.js"></script>
 <script type="text/javascript" src="harness/jquery.base64.js"></script>
diff --git a/tools/packaging/templates/runner.test262.html b/tools/packaging/templates/runner.test262.html
index aff4f187c2..52c5c5e17d 100644
--- a/tools/packaging/templates/runner.test262.html
+++ b/tools/packaging/templates/runner.test262.html
@@ -11,6 +11,7 @@
 </script>
 <script type="text/javascript" src="harness/sth.js"></script>
 <script type="text/javascript" src="harness/sta.js"></script>
+<script type="text/javascript" src="harness/assert.js"></script>
 <script type="text/javascript" src="harness/jqueryprogressbar.js"></script>
 <script type="text/javascript" src="harness/helper.js"></script>
 <script type="text/javascript" src="harness/jquery.base64.js"></script>
diff --git a/tools/packaging/test262.py b/tools/packaging/test262.py
index 40c756fc95..196f4bb14f 100755
--- a/tools/packaging/test262.py
+++ b/tools/packaging/test262.py
@@ -290,7 +290,8 @@ try {
   def GetSource(self, command_template):
     # "var testDescrip = " + str(self.testRecord) + ';\n\n' + \
     source = self.suite.GetInclude("sta.js") + \
-        self.suite.GetInclude("cth.js")
+        self.suite.GetInclude("cth.js") + \
+        self.suite.GetInclude("assert.js")
 
     if self.IsAsyncTest():
       source = source + \