diff --git a/core/src/index/unittest/test_nsg/test_nsg.cpp b/core/src/index/unittest/test_nsg/test_nsg.cpp
index c69f4b78fa..5166b21956 100644
--- a/core/src/index/unittest/test_nsg/test_nsg.cpp
+++ b/core/src/index/unittest/test_nsg/test_nsg.cpp
@@ -42,7 +42,8 @@ class NSGInterfaceTest : public DataGen, public ::testing::Test {
     SetUp() override {
         // Init_with_default();
 #ifdef MILVUS_GPU_VERSION
-        knowhere::FaissGpuResourceMgr::GetInstance().InitDevice(DEVICEID, 1024 * 1024 * 200, 1024 * 1024 * 600, 1);
+        int64_t MB = 1024 * 1024;
+        knowhere::FaissGpuResourceMgr::GetInstance().InitDevice(DEVICEID, MB * 200, MB * 600, 1);
 #endif
         Generate(256, 1000000 / 100, 1);
         index_ = std::make_shared<knowhere::NSG>();
diff --git a/core/src/wrapper/ConfAdapter.cpp b/core/src/wrapper/ConfAdapter.cpp
index 89b9c84b9f..03de96a98b 100644
--- a/core/src/wrapper/ConfAdapter.cpp
+++ b/core/src/wrapper/ConfAdapter.cpp
@@ -134,7 +134,7 @@ IVFPQConfAdapter::Match(const TempMetaConf& metaconf) {
 
     /*
      * Faiss 1.6
-     * Only 1, 2, 3, 4, 6, 8, 10, 12, 16, 20, 24, 28, 32 dims per sub-quantizer are currently supporte with
+     * Only 1, 2, 3, 4, 6, 8, 10, 12, 16, 20, 24, 28, 32 dims per sub-quantizer are currently supported with
      * no precomputed codes. Precomputed codes supports any number of dimensions, but will involve memory overheads.
      */
     static std::vector<int64_t> support_dim_per_subquantizer{32, 28, 24, 20, 16, 12, 10, 8, 6, 4, 3, 2, 1};
@@ -152,8 +152,10 @@ IVFPQConfAdapter::Match(const TempMetaConf& metaconf) {
 
     if (resset.empty()) {
         // todo(linxj): throw exception here.
-        WRAPPER_LOG_ERROR << "The dims of PQ is wrong!";
-        throw WrapperException("The dims of PQ is wrong!");
+        WRAPPER_LOG_ERROR << "The dims of PQ is wrong : only 1, 2, 3, 4, 6, 8, 10, 12, 16, 20, 24, 28, 32 dims per sub-"
+                             "quantizer are currently supported with no precomputed codes.";
+        throw WrapperException("The dims of PQ is wrong : only 1, 2, 3, 4, 6, 8, 10, 12, 16, 20, 24, 28, 32 dims "
+                               "per sub-quantizer are currently supported with no precomputed codes.");
         // return nullptr;
     }
     static int64_t compression_level = 1;  // 1:low, 2:high