diff --git a/cml/shared/errors.py b/cml/shared/errors.py
index 966f47c812014b5a78be77294ef9c008402d244f..e04ff288cad1a8737af348652f0d2a2e1affd5a7 100644
--- a/cml/shared/errors.py
+++ b/cml/shared/errors.py
@@ -4,6 +4,10 @@ class BaseError(Exception):
     pass
 
 
+class ModiError(BaseError):
+    pass
+
+
 class NoModelReconstructedError(BaseError):
     pass