diff --git a/product/CMFCategory/Renderer.py b/product/CMFCategory/Renderer.py
index eeb7578364673ece61434d053cb945db0b409e22..86098107d5be58fb6baf91bf97450ab8c0ddef00 100644
--- a/product/CMFCategory/Renderer.py
+++ b/product/CMFCategory/Renderer.py
@@ -82,12 +82,6 @@ class Renderer(Filter):
 
     - *base_category*: the base category to consider (if None, default is used) API
 
-    - *base*: if set to 0, do not include the base category. If set to 1,
-              include the base category. If set to a string, use the string as base.
-
-              (implementation trick: if set to string, use that string as the base string
-              when recursing) IMPLEMENTATION HACK
-
     - *base*: if set to 0, do not include the base category. If set to 1,
               include the base category. If set to a string, use the string as base.
               This is useful for creationg multiple base categories sharing the same categories.