diff --git a/lib/galaxy/model/migrations/alembic/versions_gxy/d0583094c8cd_add_quota_source_labels.py b/lib/galaxy/model/migrations/alembic/versions_gxy/d0583094c8cd_add_quota_source_labels.py
index 9fb4ce1be5ef..867ac31aa43f 100644
--- a/lib/galaxy/model/migrations/alembic/versions_gxy/d0583094c8cd_add_quota_source_labels.py
+++ b/lib/galaxy/model/migrations/alembic/versions_gxy/d0583094c8cd_add_quota_source_labels.py
@@ -17,7 +17,6 @@
 from galaxy.model.migrations.util import (
     add_unique_constraint,
     drop_column,
-    drop_unique_constraint,
 )
 
 # revision identifiers, used by Alembic.