diff --git a/VietTypeATL/Register.cpp b/VietTypeATL/Register.cpp
index a495bc2..dcdd5e2 100644
--- a/VietTypeATL/Register.cpp
+++ b/VietTypeATL/Register.cpp
@@ -294,10 +294,6 @@ extern "C" HRESULT __cdecl DeactivateProfiles() {
     HRESULT hr;
     LSTATUS err;
 
-    CComPtr<ITfInputProcessorProfileMgr> profileMgr;
-    hr = profileMgr.CoCreateInstance(CLSID_TF_InputProcessorProfiles, NULL, CLSCTX_INPROC_SERVER);
-    HRESULT_CHECK_RETURN(hr, L"%s", L"profileMgr.CoCreateInstance failed");
-
     hr = InstallTip(false);
     HRESULT_CHECK_RETURN(hr, L"%s", L"InstallTip failed");
 
@@ -305,9 +301,7 @@ extern "C" HRESULT __cdecl DeactivateProfiles() {
         CRegKey key;
         err = key.Create(HKEY_CURRENT_USER, L"Keyboard Layout\\Substitutes", nullptr, 0, KEY_SET_VALUE);
         WINERROR_CHECK_RETURN_HRESULT(err, L"%s", L"key.Create(Keyboard Layout\\Substitutes) failed");
-
-        err = key.DeleteValue(L"0000042a");
-        WINERROR_CHECK_RETURN_HRESULT(err, L"%s", L"key.SetStringValue failed");
+        key.DeleteValue(L"0000042a");
     }
 
     return S_OK;