diff --git a/swh/deposit/migrations/0018_migrate_swhids.py b/swh/deposit/migrations/0018_migrate_swhids.py
--- a/swh/deposit/migrations/0018_migrate_swhids.py
+++ b/swh/deposit/migrations/0018_migrate_swhids.py
@@ -17,6 +17,7 @@
     REVISION,
     SNAPSHOT,
 )
+from swh.model.model import Origin
 from swh.storage import get_storage as get_storage_client
 
 
@@ -123,7 +124,7 @@
         dir_id = obj_dir.object_id
         origin = obj_dir.metadata["origin"]
 
-        check_origin = storage.origin_get({"url": origin})
+        check_origin = storage.origin_get([Origin(url=origin)])[0]
         if not check_origin:
             logger.warning("Deposit id %s: Origin %s not found!", deposit.id, origin)
             continue
@@ -277,7 +278,7 @@
         external_id = deposit.external_id
 
         origin = resolve_origin(deposit.id, provider_url, external_id)
-        check_origin = storage.origin_get({"url": origin})
+        check_origin = storage.origin_get([Origin(url=origin)])[0]
         if not check_origin:
             logger.warning("Deposit id %s: Origin %s not found!", deposit.id, origin)
             continue