diff --git a/rhodecode/lib/exceptions.py b/rhodecode/lib/exceptions.py
--- a/rhodecode/lib/exceptions.py
+++ b/rhodecode/lib/exceptions.py
@@ -98,3 +98,7 @@ class UserCreationError(Exception):
 
 class RepositoryCreationError(Exception):
     pass
+
+
+class HgsubversionImportError(Exception):
+    pass