diff --git a/build/Microsoft.DotNet.Cli.Prepare.targets b/build/Microsoft.DotNet.Cli.Prepare.targets
index 91acac4dd..302b7e6c6 100644
--- a/build/Microsoft.DotNet.Cli.Prepare.targets
+++ b/build/Microsoft.DotNet.Cli.Prepare.targets
@@ -146,8 +146,8 @@
       <AdditionalCoreSetupChannel>preview</AdditionalCoreSetupChannel>
       <AdditionalSharedFrameworkVersion>1.0.5</AdditionalSharedFrameworkVersion>
       <AdditionalSharedHostVersion>1.0.1</AdditionalSharedHostVersion>
-      <AdditionalHostFxrVersion Condition=" '$(OS)' != 'Windows_NT' ">1.0.1</AdditionalHostFxrVersion>
-      <AdditionalHostFxrVersion Condition=" '$(OS)' == 'Windows_NT' ">1.0.5</AdditionalHostFxrVersion>
+      <AdditionalHostFxrVersion Condition=" '$(OSName)' != 'win' ">1.0.1</AdditionalHostFxrVersion>
+      <AdditionalHostFxrVersion Condition=" '$(OSName)' == 'win' ">1.0.5</AdditionalHostFxrVersion>
 
       <!-- Additional Downloaded Installers + Archives -->
       <AdditionalDownloadedSharedHostInstallerFileName Condition=" '$(InstallerExtension)' != '' ">dotnet-host-$(ProductMonikerRid).$(AdditionalSharedHostVersion)$(InstallerExtension)</AdditionalDownloadedSharedHostInstallerFileName>