app/utils/converters.py

@@ -43,7 +43,7 @@ class PageConverter(BaseConverter):
 
     # Matches integers for the topic number, then either nothing, a page
     # number, a slug, or a page number followed by a slug
-    regex = r'(\d+)(?:/(\d+)|/fin)(?:/[\w-]+)?'
+    regex = r'(\d+)(?:/(\d+)|/fin)?(?:/[\w-]+)?'
     object = None
 
     def to_python(self, url):