diff --git a/addons/web/controllers/main.py b/addons/web/controllers/main.py
index 7cc240a3ac7..6dcc069fcc2 100644
--- a/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@ -509,9 +509,6 @@ html_template = """
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-
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%(css)s
%(js)s
' % i for i in manifest_list('js', debug=request.debug))
- css = "\n ".join('' % i for i in manifest_list('css', debug=request.debug))
+ css = """
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+ """
+ js = """
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+ """
r = html_template % {
'js': js,