diff --git a/addons/website_blog/controllers/main.py b/addons/website_blog/controllers/main.py
index 619938ce118..737731b88a4 100644
--- a/addons/website_blog/controllers/main.py
+++ b/addons/website_blog/controllers/main.py
@@ -69,7 +69,7 @@ class WebsiteBlog(http.Controller):
 
         active_tag_ids = tags and [unslug(tag)[1] for tag in tags.split(',')] or []
         if active_tag_ids:
-            fixed_tag_slug = ",".join(slug(t) for t in request.env['blog.tag'].browse(active_tag_ids))
+            fixed_tag_slug = ",".join(slug(t) for t in request.env['blog.tag'].browse(active_tag_ids).exists())
             if fixed_tag_slug != tags:
                 return request.redirect(request.httprequest.full_path.replace("/tag/%s/" % tags, "/tag/%s/" % fixed_tag_slug, 1), 301)