diff --git a/backend/backend/models/stop.py b/backend/backend/models/stop.py
index 49c0f30..dd7b87c 100644
--- a/backend/backend/models/stop.py
+++ b/backend/backend/models/stop.py
@@ -23,6 +23,7 @@ from sqlalchemy.orm import (
     Mapped,
     relationship,
     selectinload,
+    with_polymorphic,
 )
 from sqlalchemy.schema import Index
 from sqlalchemy_utils.types.ts_vector import TSVectorType
@@ -98,11 +99,17 @@ class _Stop(Base):
         if (session := await cls.db.get_session()) is not None:
 
             async with session.begin():
-                match_stmt = cls.names_tsv.match(name, postgresql_regconfig="french")
-                ranking_stmt = func.ts_rank_cd(
-                    cls.names_tsv, func.plainto_tsquery("french", name)
+                descendants = with_polymorphic(_Stop, "*")
+
+                match_stmt = descendants.names_tsv.match(
+                    name, postgresql_regconfig="french"
+                )
+                ranking_stmt = func.ts_rank_cd(
+                    descendants.names_tsv, func.plainto_tsquery("french", name)
+                )
+                stmt = (
+                    select(descendants).filter(match_stmt).order_by(desc(ranking_stmt))
                 )
-                stmt = select(cls).filter(match_stmt).order_by(desc(ranking_stmt))
 
                 res = await session.execute(stmt)
                 stops = res.scalars().all()