diff --git a/html/index.html b/html/index.html
index 9811beb81..fefd66c88 100644
--- a/html/index.html
+++ b/html/index.html
@@ -10,7 +10,6 @@
     <!-- for local development
     <link rel="stylesheet" type="text/css" href="css/bootstrap.css">
     <link rel="stylesheet" type="text/css" href="css/style.css">
-    <link rel="stylesheet" type="text/css" href="css/treejs.css" id="treejs_styles">
     <link rel="stylesheet" type="text/css" href="css/dropzone.css" id="dropzone_styles">
     -->