diff --git a/doc/sphinx/lfun/clean_up.rst b/doc/sphinx/lfun/clean_up.rst
index c5a2715..602a3b5 100644
--- a/doc/sphinx/lfun/clean_up.rst
+++ b/doc/sphinx/lfun/clean_up.rst
@@ -90,7 +90,5 @@
      :doc:`reset`
    Properties:
      :doc:`../props/P_NEVER_CLEAN`
-   Konzepte:
-     memory
 
 18.02.2019, Zesstra