diff --git a/backend/open_webui/utils/oauth.py b/backend/open_webui/utils/oauth.py
index 6d7bf67d07..061737a35b 100644
--- a/backend/open_webui/utils/oauth.py
+++ b/backend/open_webui/utils/oauth.py
@@ -1693,7 +1693,7 @@ class OAuthManager:
             log.debug('Using creator ID %s for potential group creation.', creator_id)
 
             for group_name in user_oauth_groups:
-                if group_name not in all_group_names:
+                if group_name not in all_group_names and not is_in_blocked_groups(group_name, blocked_groups):
                     log.info("Group '%s' not found via OAuth claim. Creating group...", group_name)
                     try:
                         new_group_form = GroupForm(