diff --git a/lightrag/utils_graph.py b/lightrag/utils_graph.py
index ce837dc0..392d1c69 100644
--- a/lightrag/utils_graph.py
+++ b/lightrag/utils_graph.py
@@ -85,10 +85,10 @@ async def adelete_by_relation(
 
             # Delete relation from vector database
             rel_ids_to_delete = [
-                    compute_mdhash_id(source_entity + target_entity, prefix="rel-"),
-                    compute_mdhash_id(target_entity + source_entity, prefix="rel-"),
-                ]
-            
+                compute_mdhash_id(source_entity + target_entity, prefix="rel-"),
+                compute_mdhash_id(target_entity + source_entity, prefix="rel-"),
+            ]
+
             await relationships_vdb.delete(rel_ids_to_delete)
 
             # Delete relation from knowledge graph