diff --git a/EgtNumKernel.vcxproj b/EgtNumKernel.vcxproj
index ae9c3f7..78797d5 100644
--- a/EgtNumKernel.vcxproj
+++ b/EgtNumKernel.vcxproj
@@ -159,6 +159,7 @@ copy $(TargetPath) \EgtProg\DllD64</Command>
       <GenerateDebugInformation>false</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
+      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
     </Link>
     <PostBuildEvent>
       <Command>copy $(TargetDir)$(TargetName).lib \EgtDev\Lib\
@@ -189,6 +190,7 @@ copy $(TargetPath) \EgtProg\Dll32</Command>
       <GenerateDebugInformation>false</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
+      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
     </Link>
     <PostBuildEvent>
       <Command>copy $(TargetDir)$(TargetName).lib \EgtDev\Lib\