--- a/server/test/data-migractions/migratedapp/schema.py	Mon Oct 19 14:28:30 2015 +0200
+++ b/server/test/data-migractions/migratedapp/schema.py	Mon Oct 19 14:29:53 2015 +0200
@@ -21,6 +21,7 @@
                             SubjectRelation, Bytes,
                             RichString, String, Int, Boolean, Datetime, Date, Float)
 from yams.constraints import SizeConstraint, UniqueConstraint
+from cubicweb import _
 from cubicweb.schema import (WorkflowableEntityType, RQLConstraint,
                              RQLVocabularyConstraint,
                              ERQLExpression, RRQLExpression)