diff --git a/cpp/doxygen/header.html b/cpp/doxygen/header.html
index 579d7829ed..e04385d042 100644
--- a/cpp/doxygen/header.html
+++ b/cpp/doxygen/header.html
@@ -17,10 +17,6 @@
 <link href="$relpath^$stylesheet" rel="stylesheet" type="text/css" />
 $extrastylesheet
 
-<!-- RAPIDS CUSTOM JS & CSS: START, Please add these two lines back after every version upgrade -->
-<script defer src="https://docs.rapids.ai/assets/js/custom.js"></script>
-<link rel="stylesheet" href="https://docs.rapids.ai/assets/css/custom.css">
-<!-- RAPIDS CUSTOM JS & CSS: END -->
 
 </head>
 <body>
