diff --git a/product/CMFActivity/Activity/SQLDict.py b/product/CMFActivity/Activity/SQLDict.py
index 0808509b6f93185fca14bb54a289a14293d27594..7ee77759e4d5a37a42393125e6c3fe80735b5c67 100644
--- a/product/CMFActivity/Activity/SQLDict.py
+++ b/product/CMFActivity/Activity/SQLDict.py
@@ -52,7 +52,7 @@ MAX_VALIDATED_LIMIT = 1000
 READ_MESSAGE_LIMIT = 1000
 # Stop electing more messages for processing if more than this number of
 # objects are impacted by elected messages.
-MAX_GROUPED_OBJECTS = 500
+MAX_GROUPED_OBJECTS = 100
 
 class SQLDict(RAMDict, SQLBase):
   """