diff --git a/tests/lhs-test.html+lhs b/tests/lhs-test.html+lhs
index 16112299d..b9413f07a 100644
--- a/tests/lhs-test.html+lhs
+++ b/tests/lhs-test.html+lhs
@@ -2,6 +2,7 @@
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+  <meta http-equiv="Content-Style-Type" content="text/css" />
   <meta name="generator" content="pandoc" />
   <title></title>
   <style type="text/css">
