diff --git a/test_rendering/index.html b/test_rendering/index.html
index 400ca8c3ec..2e20b88372 100644
--- a/test_rendering/index.html
+++ b/test_rendering/index.html
@@ -23,7 +23,7 @@
     });
   </script>
 
-  <!-- This script is provided by the debug server (start with `build.py serve`) -->
+  <!-- This script is provided by the debug server (started with `make serve`) -->
   <script type="text/javascript" src="loader.js"></script>
 
   <script type="text/javascript">