diff --git a/migrate/versioning/schemadiff.py b/migrate/versioning/schemadiff.py
index b30c015..04cf83e 100644
--- a/migrate/versioning/schemadiff.py
+++ b/migrate/versioning/schemadiff.py
@@ -5,7 +5,6 @@
 import logging
 import sqlalchemy
 
-from migrate.changeset import SQLA_06
 from sqlalchemy.types import Float
 
 log = logging.getLogger(__name__)