diff --git a/chuniio/chuniio.vcxproj b/chuniio/chuniio.vcxproj
index 40d08ad..d39f361 100644
--- a/chuniio/chuniio.vcxproj
+++ b/chuniio/chuniio.vcxproj
@@ -93,7 +93,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>WIN32;NDEBUG;CHUNIIO_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <PrecompiledHeader>Use</PrecompiledHeader>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
     </ClCompile>
     <Link>