diff --git a/vectordb_bench/backend/clients/milvus/config.py b/vectordb_bench/backend/clients/milvus/config.py
index 2367dda46..e6188614d 100644
--- a/vectordb_bench/backend/clients/milvus/config.py
+++ b/vectordb_bench/backend/clients/milvus/config.py
@@ -37,7 +37,7 @@ class MilvusIndexConfig(BaseModel):
 
     index: IndexType
     metric_type: MetricType | None = None
-    use_partition_key: bool = True  # for label-filter
+    use_partition_key: bool = False  # for label-filter
 
     @property
     def is_gpu_index(self) -> bool: