diff --git a/src/test/content/test_collections.html b/src/test/content/test_collections.html
index 6878f6b6c73..0c0f9aa04aa 100644
--- a/src/test/content/test_collections.html
+++ b/src/test/content/test_collections.html
@@ -1,5 +1,6 @@
 <html>
 <head>
+<meta charset="utf-8">
 <title>test_binding
     page  </title>
 <base href="./"></base>
diff --git a/src/test/content/test_prototypes.html b/src/test/content/test_prototypes.html
index 93019abe424..c2f012b57fa 100644
--- a/src/test/content/test_prototypes.html
+++ b/src/test/content/test_prototypes.html
@@ -1,5 +1,6 @@
 <html>
 <head>
+  <meta charset="utf-8">
   <script src="harness.js"></script>
 </head>
 <body>
