diff --git a/internal/core/unittest/test_hybrid_index.cpp b/internal/core/unittest/test_hybrid_index.cpp
index a4a6661c20914..e4f19087ac519 100644
--- a/internal/core/unittest/test_hybrid_index.cpp
+++ b/internal/core/unittest/test_hybrid_index.cpp
@@ -210,6 +210,7 @@ class HybridIndexTestV1 : public testing::Test {
     }
 
     virtual ~HybridIndexTestV1() override {
+        this->index_.reset();
         boost::filesystem::remove_all(chunk_manager_->GetRootPath());
     }