diff --git a/EgtGeomKernel.vcxproj b/EgtGeomKernel.vcxproj
index 5f29f2e..8121c8f 100644
--- a/EgtGeomKernel.vcxproj
+++ b/EgtGeomKernel.vcxproj
@@ -201,6 +201,7 @@ copy $(TargetPath) \EgtProg\DllD64</Command>
       </ModuleDefinitionFile>
       <AdditionalDependencies>C:\EgtDev\Extern\OxySec\Lib\x32\xnodus32.obj;%(AdditionalDependencies)</AdditionalDependencies>
       <GenerateMapFile>false</GenerateMapFile>
+      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
     </Link>
     <Midl>
       <MkTypLibCompatible>false</MkTypLibCompatible>
@@ -244,6 +245,7 @@ copy $(TargetPath) \EgtProg\Dll32</Command>
       <ModuleDefinitionFile>
       </ModuleDefinitionFile>
       <AdditionalDependencies>C:\EgtDev\Extern\OxySec\Lib\x64\xnodus.obj;%(AdditionalDependencies)</AdditionalDependencies>
+      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
     </Link>
     <Midl>
       <MkTypLibCompatible>false</MkTypLibCompatible>