diff --git a/mpicms/base/templatetags/base_tags.py b/mpicms/base/templatetags/base_tags.py
index d6ee1b2..a1a3fd8 100644
--- a/mpicms/base/templatetags/base_tags.py
+++ b/mpicms/base/templatetags/base_tags.py
@@ -40,7 +40,7 @@ def remove_i18n(url):
             r"|TH[0-5]\d[ab]?"
             r"|HS\d\d"
             r"|GH[01]\d"
-            r"|[K0123]\.[1234]\.F?\d\d"
+            r"|[K01234]\.[1234]\.F?\d\d"
             r"|SR ?([1234])")
 
 SR_MAP = {