diff --git a/backend/db_manager.py b/backend/db_manager.py
index 38ffcc2..7af13e2 100644
--- a/backend/db_manager.py
+++ b/backend/db_manager.py
@@ -829,9 +829,8 @@ class DatabaseManager:
         where_clause = " AND ".join(conditions) if conditions else "1=1"
         
         rows = conn.execute(
-            f"""SELECT ah.*, at.name as template_name
+            f"""SELECT ah.*
                 FROM attribute_history ah
-                JOIN attribute_templates at ON ah.template_id = at.id
                 WHERE {where_clause}
                 ORDER BY ah.changed_at DESC LIMIT ?""",
             params + [limit]