diff --git a/addons/website/models/ir_http.py b/addons/website/models/ir_http.py
index cd073a94b79..f79a51941a8 100644
--- a/addons/website/models/ir_http.py
+++ b/addons/website/models/ir_http.py
@@ -38,7 +38,7 @@ def sitemap_qs2dom(qs, route, field='name'):
         if len(needles) == 1:
             dom = [(field, 'ilike', needles[0])]
         else:
-            dom = FALSE_DOMAIN
+            dom = list(FALSE_DOMAIN)
     return dom