diff --git a/nanobot/agent/tools/filesystem.py b/nanobot/agent/tools/filesystem.py
index 23549ef9..9c185421 100644
--- a/nanobot/agent/tools/filesystem.py
+++ b/nanobot/agent/tools/filesystem.py
@@ -16,7 +16,7 @@ from nanobot.agent.tools.schema import (
     StringSchema,
     tool_parameters_schema,
 )
-from nanobot.config.schema import Base
+from nanobot.config_base import Base
 from nanobot.security.workspace_access import current_tool_workspace
 from nanobot.utils.helpers import build_image_content_blocks, detect_image_mime