diff --git a/deluge/ui/web/index.html b/deluge/ui/web/index.html
index ef4b07df3..0eb3b7cef 100644
--- a/deluge/ui/web/index.html
+++ b/deluge/ui/web/index.html
@@ -7,14 +7,17 @@
         <link rel="icon" href="/icons/deluge.png" type="image/png" />
         
         <!-- Stylesheets -->
-        %for stylesheet in stylesheets:
+        % for stylesheet in stylesheets:
         <link rel="stylesheet" type="text/css" href="${stylesheet}" />
-        %endfor
+        % endfor
 
         <!-- Javascript -->
-        %for script in scripts:
+        % for script in scripts:
         <script type="text/javascript" src="${script}"></script>
-        %endfor
+        % endfor
+        <script type="text/javascript">
+            Deluge.debug = ${str(debug).lower()};
+        </script>
     </head>
     <body>
         <div style="background-image: url('/themes/default/tree/loading.gif');"></div>
diff --git a/deluge/ui/web/server.py b/deluge/ui/web/server.py
index 4f82b497f..186852910 100644
--- a/deluge/ui/web/server.py
+++ b/deluge/ui/web/server.py
@@ -425,7 +425,7 @@ class TopLevel(resource.Resource):
 
         template = Template(filename=rpath("index.html"))
         request.setHeader("content-type", "text/html; charset=utf-8")
-        return template.render(scripts=scripts, stylesheets=self.stylesheets)
+        return template.render(scripts=scripts, stylesheets=self.stylesheets, debug=debug)
 
 class ServerContextFactory:
     
