diff --git a/cpp/src/wrapper/knowhere/vec_impl.cpp b/cpp/src/wrapper/knowhere/vec_impl.cpp
index edb20cf8a3d4a3afe6e0cb9cdaa73beae57535ea..cecf9dc8ce3da869dac766137837d668478ddaef 100644
--- a/cpp/src/wrapper/knowhere/vec_impl.cpp
+++ b/cpp/src/wrapper/knowhere/vec_impl.cpp
@@ -74,7 +74,7 @@ server::KnowhereError VecIndexImpl::Search(const long &nq, const float *xq, floa
 
         Config search_cfg = cfg;
 
-        AutoTurnParams(type, search_cfg);
+        ParameterValidation(type, search_cfg);
 
         auto res = index_->Search(dataset, search_cfg);
         auto ids_array = res->array()[0];
diff --git a/cpp/src/wrapper/knowhere/vec_index.cpp b/cpp/src/wrapper/knowhere/vec_index.cpp
index 2e4be3f2549b6743ba163a16dda567c4618f7b75..95ca7edb90a444671c4ff2dba3c89411e672f57b 100644
--- a/cpp/src/wrapper/knowhere/vec_index.cpp
+++ b/cpp/src/wrapper/knowhere/vec_index.cpp
@@ -241,7 +241,7 @@ void AutoGenParams(const IndexType &type, const long &size, zilliz::knowhere::Co
 #define GPU_MAX_NRPOBE 1024
 #endif
 
-void AutoTurnParams(const IndexType &type, Config &cfg) {
+void ParameterValidation(const IndexType &type, Config &cfg) {
     switch (type) {
         case IndexType::FAISS_IVFSQ8_GPU:
         case IndexType::FAISS_IVFFLAT_GPU:
@@ -249,7 +249,7 @@ void AutoTurnParams(const IndexType &type, Config &cfg) {
             if (cfg.get_with_default("nprobe", 0) != 0) {
                 auto nprobe = cfg["nprobe"].as<int>();
                 if (nprobe > GPU_MAX_NRPOBE) {
-                    WRAPPER_LOG_ERROR << "When search with GPU, nprobe shoud be no more than " << GPU_MAX_NRPOBE << ", but you passed " << nprobe
+                    WRAPPER_LOG_WARNING << "When search with GPU, nprobe shoud be no more than " << GPU_MAX_NRPOBE << ", but you passed " << nprobe
                                       << ". Search with " << GPU_MAX_NRPOBE << " instead";
                     cfg.insert_or_assign("nprobe", GPU_MAX_NRPOBE);
                 }
diff --git a/cpp/src/wrapper/knowhere/vec_index.h b/cpp/src/wrapper/knowhere/vec_index.h
index b5170acb72cb3f0f844ccf37f4f5b552953aab96..c2b7d9e8908ea8876377bb9bd29b1e88eafbb8ec 100644
--- a/cpp/src/wrapper/knowhere/vec_index.h
+++ b/cpp/src/wrapper/knowhere/vec_index.h
@@ -92,7 +92,7 @@ extern VecIndexPtr LoadVecIndex(const IndexType &index_type, const zilliz::knowh
 
 extern void AutoGenParams(const IndexType& type, const long& size, Config& cfg);
 
-extern void AutoTurnParams(const IndexType& type, Config& cfg);
+extern void ParameterValidation(const IndexType& type, Config& cfg);
 
 extern IndexType ConvertToCpuIndexType(const IndexType& type);
 extern IndexType ConvertToGpuIndexType(const IndexType& type);