diff --git a/Utilities/WaveFrontReader.h b/Utilities/WaveFrontReader.h
index 99fb5ec..26e29d7 100644
--- a/Utilities/WaveFrontReader.h
+++ b/Utilities/WaveFrontReader.h
@@ -589,13 +589,13 @@ namespace DX
 
         HRESULT LoadVBO(_In_z_ const wchar_t* szFileName)
         {
+            Clear();
+
             if (!szFileName)
                 return E_INVALIDARG;
 
             using namespace DirectX;
 
-            Clear();
-
     #ifdef _WIN32
             wchar_t fname[_MAX_FNAME] = {};
             _wsplitpath_s(szFileName, nullptr, 0, nullptr, 0, fname, _MAX_FNAME, nullptr, 0);