2 files changed, 5 insertions, 3 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/show_exceptions.rb b/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
index b1adf3d2d1..c17c746096 100644
--- a/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
+++ b/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
@@ -116,7 +116,7 @@ module ActionDispatch
       end
 
       def render(status, body)
-        [status, {'Content-Type' => 'text/html', 'Content-Length' => body.bytesize.to_s}, [body]]
+        [status, {'Content-Type' => "text/html; charset=#{Response.default_charset}", 'Content-Length' => body.bytesize.to_s}, [body]]
       end
 
       def public_path
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/layout.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/layout.erb
index 6c32fb17b8..6e71fd7ddc 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/layout.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/layout.erb
@@ -1,11 +1,13 @@
-<html xmlns="http://www.w3.org/1999/xhtml">
+<!DOCTYPE html>
+<html lang="en">
 <head>
+  <meta charset="utf-8" />
   <title>Action Controller: Exception caught</title>
   <style>
     body { background-color: #fff; color: #333; }
 
     body, p, ol, ul, td {
-      font-family: verdana, arial, helvetica, sans-serif;
+      font-family: helvetica, verdana, arial, sans-serif;
       font-size:   13px;
       line-height: 18px;
     }