diff --git a/api/core/app/apps/agent_chat/app_config_manager.py b/api/core/app/apps/agent_chat/app_config_manager.py
index 1735b2f0d8..f495ebbf35 100644
--- a/api/core/app/apps/agent_chat/app_config_manager.py
+++ b/api/core/app/apps/agent_chat/app_config_manager.py
@@ -143,6 +143,12 @@ class AgentChatAppConfigManager(BaseAppConfigManager):
         config, current_related_config_keys = RetrievalResourceConfigManager.validate_and_set_defaults(config)
         related_config_keys.extend(current_related_config_keys)
 
+        # dataset configs
+        # dataset_query_variable
+        config, current_related_config_keys = DatasetConfigManager.validate_and_set_defaults(tenant_id, app_mode,
+                                                                                             config)
+        related_config_keys.extend(current_related_config_keys)
+
         # moderation validation
         config, current_related_config_keys = SensitiveWordAvoidanceConfigManager.validate_and_set_defaults(tenant_id,
                                                                                                             config)