diff --git a/theme/templates/ebook/layout.html b/theme/templates/ebook/layout.html
index 2849404d4..1a9c01cc2 100644
--- a/theme/templates/ebook/layout.html
+++ b/theme/templates/ebook/layout.html
@@ -9,7 +9,7 @@
         <meta name="description" content="{% block description %}{% endblock %}">
         <meta name="generator" content="GitBook {{ gitbook.version }}">
         {% block head %}{% endblock %}
-        {{ htmlSnippet("head:end")|default("") }}
+        {{ htmlSnippet("head:end")|default("")|safe }}
     </head>
     <body>
         {{ htmlSnippet("body:start")|default("")|safe }}
diff --git a/theme/templates/website/layout.html b/theme/templates/website/layout.html
index fca3313bd..e412c0c14 100644
--- a/theme/templates/website/layout.html
+++ b/theme/templates/website/layout.html
@@ -2,7 +2,7 @@
 <html lang="{{ language }}">
     {{ htmlSnippet("html:start")|default("")|safe }}
     <head>
-        {{ htmlSnippet("head:start")|default("") }}
+        {{ htmlSnippet("head:start")|default("")|safe }}
         <meta charset="UTF-8">
         <meta http-equiv="X-UA-Compatible" content="IE=11; IE=10; IE=9; IE=8; IE=7; IE=EDGE" />
         <title>{% block title %}{% endblock %}</title>
