diff --git a/trytond/backend/database.py b/trytond/backend/database.py
index 3ca6b181fc..862b82b18b 100644
--- a/trytond/backend/database.py
+++ b/trytond/backend/database.py
@@ -1,6 +1,6 @@
 #This file is part of Tryton.  The COPYRIGHT file at the top level of
 #this repository contains the full copyright notices and license terms.
-from trytond.const import CONTEXT_CACHE_SIZE, MODEL_CACHE_SIZE
+from trytond.const import MODEL_CACHE_SIZE
 
 DatabaseIntegrityError = None
 DatabaseOperationalError = None
diff --git a/trytond/const.py b/trytond/const.py
index b0a2006442..13995b3db7 100644
--- a/trytond/const.py
+++ b/trytond/const.py
@@ -18,7 +18,6 @@ OPERATORS = (
     '>',
 )
 
-CONTEXT_CACHE_SIZE = 10
 MODEL_CACHE_SIZE = 200
 RECORD_CACHE_SIZE = 2000
 BROWSE_FIELD_TRESHOLD = 100