diff --git a/cbl_migrator/migrator.py b/cbl_migrator/migrator.py
index f70ca8d..8a14a71 100644
--- a/cbl_migrator/migrator.py
+++ b/cbl_migrator/migrator.py
@@ -237,7 +237,9 @@ def __copy_schema(self):
                     for cons in table.constraints
                     if isinstance(cons, CheckConstraint)
                 ]:
-                    if not any(col in str(cc.sqltext).lower() for col in excluded_fields):
+                    if not any(
+                        col in str(cc.sqltext).lower() for col in excluded_fields
+                    ):
                         cc.sqltext = TextClause(str(cc.sqltext).replace('"', ""))
                         keep_constraints.append(cc)
             table.constraints = set(keep_constraints)