diff --git a/extensions/Microsoft.AspNetCore.Runtime.SiteExtension/Microsoft.AspNetCore.Runtime.SiteExtension.csproj b/extensions/Microsoft.AspNetCore.Runtime.SiteExtension/Microsoft.AspNetCore.Runtime.SiteExtension.csproj
index c0ae963fc0..2cad38271e 100644
--- a/extensions/Microsoft.AspNetCore.Runtime.SiteExtension/Microsoft.AspNetCore.Runtime.SiteExtension.csproj
+++ b/extensions/Microsoft.AspNetCore.Runtime.SiteExtension/Microsoft.AspNetCore.Runtime.SiteExtension.csproj
@@ -32,7 +32,7 @@
     <ProjectReference Include="..\..\src\Microsoft.Web.Xdt.Extensions\Microsoft.Web.Xdt.Extensions.csproj" PrivateAssets="All" />
   </ItemGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition="'$(OS)' == 'Windows_NT'">
     <PackageReference Include="Microsoft.AspNetCore.AspNetCoreModule" Version="$(MicrosoftAspNetCoreAspNetCoreModulePackageVersion)" PrivateAssets="All" />
   </ItemGroup>