diff --git a/surround/assembler.py b/surround/assembler.py
index 2d7b901f..f3d87313 100644
--- a/surround/assembler.py
+++ b/surround/assembler.py
@@ -7,7 +7,7 @@
 from abc import ABC
 from datetime import datetime
 
-from .config import has_config
+from .config import Config, has_config
 from .stage import Filter, Estimator, Validator
 from .visualiser import Visualiser