diff --git a/tryton/action/main.py b/tryton/action/main.py
index 2ae4ba31fb..f409a5788a 100644
--- a/tryton/action/main.py
+++ b/tryton/action/main.py
@@ -114,7 +114,6 @@ class Action(object):
             action_ctx.update(
                 decoder.decode(action.get('pyson_context') or '{}'))
             ctx.update(action_ctx)
-            ctx.update(context)
 
             ctx['context'] = ctx
             decoder = PYSONDecoder(ctx)