diff --git a/sphinx_rtd_theme/layout.html b/sphinx_rtd_theme/layout.html
index 934406330..1afe3f06e 100644
--- a/sphinx_rtd_theme/layout.html
+++ b/sphinx_rtd_theme/layout.html
@@ -12,9 +12,9 @@
 <!DOCTYPE html>
 <html class="{{ sphinx_writer }}" lang="{{ lang_attr }}" >
 <head>
-  <meta charset="utf-8">
+  <meta charset="utf-8" />
   {{ metatags }}
-  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
   {% block htmltitle %}
   <title>{{ title|striptags|e }}{{ titlesuffix }}</title>
   {% endblock %}
