diff --git a/API_Lua.cpp b/API_Lua.cpp
index e45a8a2..2a927ca 100644
--- a/API_Lua.cpp
+++ b/API_Lua.cpp
@@ -120,7 +120,7 @@ BOOL
 __stdcall EgtLuaGetGlobVectorVar( const wchar_t* wsVar, double vtVal[3])
 {
   // verifico parametro di ritorno
-   if ( &vtVal == nullptr)
+   if ( vtVal == nullptr)
       return FALSE ;
   // recupero il valore della variabile
    Vector3d vtTmp ;
@@ -135,7 +135,7 @@ BOOL
 __stdcall EgtLuaGetGlobPointVar( const wchar_t* wsVar, double ptVal[3])
 {
   // verifico parametro di ritorno
-   if ( &ptVal == nullptr)
+   if ( ptVal == nullptr)
       return FALSE ;
   // recupero il valore della variabile
    Point3d ptTmp ;
diff --git a/EgtInterface.vcxproj b/EgtInterface.vcxproj
index a42ec95..31dc73c 100644
--- a/EgtInterface.vcxproj
+++ b/EgtInterface.vcxproj
@@ -129,6 +129,7 @@ copy $(TargetPath) \EgtProg\DllD32</Command>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <MinimalRebuild>false</MinimalRebuild>
       <LanguageStandard>stdcpp17</LanguageStandard>
+      <AdditionalOptions>-Wno-tautological-undefined-compare</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -198,6 +199,7 @@ copy $(TargetPath) \EgtProg\Dll32</Command>
       <WholeProgramOptimization>false</WholeProgramOptimization>
       <DebugInformationFormat>None</DebugInformationFormat>
       <LanguageStandard>stdcpp17</LanguageStandard>
+      <AdditionalOptions>-Wno-tautological-undefined-compare</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>