diff --git a/addons/web_editor/controllers/main.py b/addons/web_editor/controllers/main.py
index c94bed58ae0..c264ce2aa32 100644
--- a/addons/web_editor/controllers/main.py
+++ b/addons/web_editor/controllers/main.py
@@ -38,7 +38,7 @@ def ensure_no_history_divergence(record, html_field_name, incoming_history_ids):
     if server_history_matches:
         server_last_history_id = server_history_matches[1].split(',')[-1]
         if server_last_history_id not in incoming_history_ids:
-            logger.error('The document was already saved from someone with a different history for model %r, field %r with id %r.', record._name, html_field_name, record.id)
+            logger.warning('The document was already saved from someone with a different history for model %r, field %r with id %r.', record._name, html_field_name, record.id)
             raise ValidationError(_('The document was already saved from someone with a different history for model %r, field %r with id %r.', record._name, html_field_name, record.id))
 
 def handle_history_divergence(record, html_field_name, vals):