diff --git a/db/message_storage.py b/db/message_storage.py
index d461ca3..c3d87fc 100644
--- a/db/message_storage.py
+++ b/db/message_storage.py
@@ -34,6 +34,7 @@ class MessageStorageDB(BaseDBOperator):
           AND message_type in (1, 49)
           AND group_id = %s 
           AND length(content) > %s
+          AND CHAR_LENGTH(content) < 300
           AND content NOT LIKE '/%'
         """
         params = (hours_ago, group_id, min_content_length)