diff --git a/llvm.proj b/llvm.proj
index 220a4b69d5edde..667fe8291179aa 100644
--- a/llvm.proj
+++ b/llvm.proj
@@ -78,6 +78,7 @@
     <_LLVMBuildArgs Condition="'$(BuildOS)' == 'Windows_NT' and '$(Configuration)' == 'Release'" Include='-DLLVM_USE_CRT_RELEASE=MT' />
     <_LLVMBuildArgs Condition="'$(BuildOS)' == 'Windows_NT' and '$(Configuration)' == 'Debug'" Include='-DLLVM_USE_CRT_DEBUG=MTd' />
     <_LLVMBuildArgs Condition="'$(BuildOS)' == 'Windows_NT' and '$(Configuration)' == 'Debug'" Include='-DLLVM_USE_CRT_RELEASE=MTd' />
+    <_LLVMBuildArgs Condition="'$(BuildOS)' == 'Windows_NT'" Include='-DLLVM_ENABLE_ZLIB=OFF' />
   </ItemGroup>
 
   <ItemGroup>