diff --git a/core/src/dog_segment/SegmentNaive.cpp b/core/src/dog_segment/SegmentNaive.cpp
index 64ef132904..0500793f0f 100644
--- a/core/src/dog_segment/SegmentNaive.cpp
+++ b/core/src/dog_segment/SegmentNaive.cpp
@@ -587,7 +587,6 @@ SegmentNaive::BuildIndex(IndexMetaPtr remote_index_meta) {
     if(record_.ack_responder_.GetAck() < 1024 * 4) {
         return Status(SERVER_BUILD_INDEX_ERROR, "too few elements");
     }
-    index_meta_ = remote_index_meta;
     for (auto&[index_name, entry]: index_meta_->get_entries()) {
         assert(entry.index_name == index_name);
         const auto &field = (*schema_)[entry.field_name];
diff --git a/core/unittest/test_c_api.cpp b/core/unittest/test_c_api.cpp
index d2618ac2f6..d2144c667f 100644
--- a/core/unittest/test_c_api.cpp
+++ b/core/unittest/test_c_api.cpp
@@ -238,7 +238,7 @@ TEST(CApiTest, BuildIndexTest) {
     CQueryInfo queryInfo{1, 10, "fakevec"};
 
     auto sea_res = Search(
-        segment, queryInfo, 20, query_raw_data.data(), DIM, result_ids, result_distances);
+        segment, queryInfo, 1, query_raw_data.data(), DIM, result_ids, result_distances);
     assert(sea_res == 0);
 
     DeleteCollection(collection);