diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Microsoft.AspNetCore.Mvc.WebApiCompatShim.csproj b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Microsoft.AspNetCore.Mvc.WebApiCompatShim.csproj
index d433dc4daa..258d632c00 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Microsoft.AspNetCore.Mvc.WebApiCompatShim.csproj
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Microsoft.AspNetCore.Mvc.WebApiCompatShim.csproj
@@ -10,6 +10,7 @@ System.Web.Http.ApiController</Description>
     <NoWarn>$(NoWarn);CS1591</NoWarn>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <PackageTags>aspnetcore;aspnetcoremvc;aspnetwebapi</PackageTags>
+    <!-- Removing this is blocked by https://github.com/aspnet/Mvc/issues/5822 -->
     <PackageTargetFallback>$(PackageTargetFallback);portable-net451+win8</PackageTargetFallback>
     <DisableImplicitAssetTargetFallback>true</DisableImplicitAssetTargetFallback>
   </PropertyGroup>
diff --git a/test/Microsoft.AspNetCore.Mvc.FunctionalTests/Microsoft.AspNetCore.Mvc.FunctionalTests.csproj b/test/Microsoft.AspNetCore.Mvc.FunctionalTests/Microsoft.AspNetCore.Mvc.FunctionalTests.csproj
index f97fc35cbd..bc9e807aca 100644
--- a/test/Microsoft.AspNetCore.Mvc.FunctionalTests/Microsoft.AspNetCore.Mvc.FunctionalTests.csproj
+++ b/test/Microsoft.AspNetCore.Mvc.FunctionalTests/Microsoft.AspNetCore.Mvc.FunctionalTests.csproj
@@ -5,6 +5,7 @@
   <PropertyGroup>
     <TargetFrameworks>netcoreapp2.0;net461</TargetFrameworks>
     <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp2.0</TargetFrameworks>
+    <!-- Removing this is blocked by https://github.com/aspnet/Mvc/issues/5822 -->
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp2.0' ">$(PackageTargetFallback);portable-net451+win8</PackageTargetFallback>
     <DisableImplicitAssetTargetFallback>true</DisableImplicitAssetTargetFallback>
 
diff --git a/test/Microsoft.AspNetCore.Mvc.WebApiCompatShimTest/Microsoft.AspNetCore.Mvc.WebApiCompatShimTest.csproj b/test/Microsoft.AspNetCore.Mvc.WebApiCompatShimTest/Microsoft.AspNetCore.Mvc.WebApiCompatShimTest.csproj
index 7467ef9141..d7833801e5 100644
--- a/test/Microsoft.AspNetCore.Mvc.WebApiCompatShimTest/Microsoft.AspNetCore.Mvc.WebApiCompatShimTest.csproj
+++ b/test/Microsoft.AspNetCore.Mvc.WebApiCompatShimTest/Microsoft.AspNetCore.Mvc.WebApiCompatShimTest.csproj
@@ -5,6 +5,7 @@
   <PropertyGroup>
     <TargetFrameworks>netcoreapp2.0</TargetFrameworks>
     <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp2.0</TargetFrameworks>
+    <!-- Removing this is blocked by https://github.com/aspnet/Mvc/issues/5822 -->
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netcoreapp2.0' ">$(PackageTargetFallback);portable-net451+win8</PackageTargetFallback>
     <DisableImplicitAssetTargetFallback>true</DisableImplicitAssetTargetFallback>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>