diff --git a/wiki/auth/categorie_public.py b/wiki/auth/categorie_public.py
index 59d3f7d6de04108995cb25a250ddfd91dce89a55..94dae6512b72d18415f6743a9b74b153b3768ff1 100644
--- a/wiki/auth/categorie_public.py
+++ b/wiki/auth/categorie_public.py
@@ -38,7 +38,7 @@ class PublicCategories(AnonymousAuth):
             sys.stderr.write("Getting page from cache")
             page = request.page
         else:
-            pagename=urllib.unquote(p.path[1:])
+            pagename= urllib.unquote(p.path[1:]).encode('ascii', 'ignore')
             if pagename.endswith(u'/'):
                 pagename=pagename[:-1]
             page = Page(request, pagename)