diff --git a/bricks/api_doc.js b/bricks/api_doc.js
index 6c64573..25140fc 100644
--- a/bricks/api_doc.js
+++ b/bricks/api_doc.js
@@ -17,21 +17,11 @@ bricks.ApiDoc = class extends bricks.VBox {
 		this.api_base_url = this.opts.base_url || '';
 		this.sections = [];
 		this.active_section = null;
-		bricks.ApiDoc._ensure_css();
 		this._build_layout();
 		var self = this;
 		schedule_once(function() { self._load(); }, 0.1);
 	}
 
-	static _ensure_css() {
-		if (bricks.ApiDoc._css_loaded) return;
-		bricks.ApiDoc._css_loaded = true;
-		var link = document.createElement('link');
-		link.rel = 'stylesheet';
-		link.href = bricks.absurl('/bricks/css/api_doc.css');
-		document.head.appendChild(link);
-	}
-
 	_build_layout() {
 		var d = this.dom_element;
 		d.classList.add('bricks-apidoc');
diff --git a/bricks/header.tmpl b/bricks/header.tmpl
index 225ca67..26fa93d 100644
--- a/bricks/header.tmpl
+++ b/bricks/header.tmpl
@@ -6,6 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 <link rel="stylesheet" href="{{entire_url('/bricks/3parties/xterm.css')}}" />
 <link rel="stylesheet" href="{{entire_url('/bricks/css/bricks.css')}}">
+<link rel="stylesheet" href="{{entire_url('/bricks/css/api_doc.css')}}">
 {% for mycss in cssfiles() %}
 <link rel="stylesheet" href="{{entire_url(mycss)}}">
 {% endfor %}