diff --git a/test/Microsoft.AspNetCore.Mvc.Routing.Abstractions.Tests/Microsoft.AspNetCore.Mvc.Routing.Abstractions.Tests.csproj b/test/Microsoft.AspNetCore.Mvc.Routing.Abstractions.Tests/Microsoft.AspNetCore.Mvc.Routing.Abstractions.Tests.csproj
index cea47b57da..9a2e1864af 100644
--- a/test/Microsoft.AspNetCore.Mvc.Routing.Abstractions.Tests/Microsoft.AspNetCore.Mvc.Routing.Abstractions.Tests.csproj
+++ b/test/Microsoft.AspNetCore.Mvc.Routing.Abstractions.Tests/Microsoft.AspNetCore.Mvc.Routing.Abstractions.Tests.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\build\common.props" />
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp1.1;net451</TargetFrameworks>
+    <TargetFrameworks>netcoreapp1.1;net452</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp1.1</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\Microsoft.AspNetCore.Routing.Abstractions\Microsoft.AspNetCore.Routing.Abstractions.csproj" />
diff --git a/test/Microsoft.AspNetCore.Routing.DecisionTree.Sources.Tests/Microsoft.AspNetCore.Routing.DecisionTree.Sources.Tests.csproj b/test/Microsoft.AspNetCore.Routing.DecisionTree.Sources.Tests/Microsoft.AspNetCore.Routing.DecisionTree.Sources.Tests.csproj
index f1255d9e64..735db3f472 100644
--- a/test/Microsoft.AspNetCore.Routing.DecisionTree.Sources.Tests/Microsoft.AspNetCore.Routing.DecisionTree.Sources.Tests.csproj
+++ b/test/Microsoft.AspNetCore.Routing.DecisionTree.Sources.Tests/Microsoft.AspNetCore.Routing.DecisionTree.Sources.Tests.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\build\common.props" />
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp1.1;net451</TargetFrameworks>
+    <TargetFrameworks>netcoreapp1.1;net452</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp1.1</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="..\..\shared\Microsoft.AspNetCore.Routing.DecisionTree.Sources\**\*.cs" />
diff --git a/test/Microsoft.AspNetCore.Routing.FunctionalTests/Microsoft.AspNetCore.Routing.FunctionalTests.csproj b/test/Microsoft.AspNetCore.Routing.FunctionalTests/Microsoft.AspNetCore.Routing.FunctionalTests.csproj
index 2502275a23..0257448b6a 100644
--- a/test/Microsoft.AspNetCore.Routing.FunctionalTests/Microsoft.AspNetCore.Routing.FunctionalTests.csproj
+++ b/test/Microsoft.AspNetCore.Routing.FunctionalTests/Microsoft.AspNetCore.Routing.FunctionalTests.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\build\common.props" />
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp1.1;net451</TargetFrameworks>
+    <TargetFrameworks>netcoreapp1.1;net452</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp1.1</TargetFrameworks>
     <RuntimeIdentifier Condition="!$(TargetFramework.StartsWith('netcoreapp'))">win7-x64</RuntimeIdentifier>
   </PropertyGroup>
   <ItemGroup>
diff --git a/test/Microsoft.AspNetCore.Routing.Tests/Microsoft.AspNetCore.Routing.Tests.csproj b/test/Microsoft.AspNetCore.Routing.Tests/Microsoft.AspNetCore.Routing.Tests.csproj
index 09702c431f..e19b4f5d9d 100644
--- a/test/Microsoft.AspNetCore.Routing.Tests/Microsoft.AspNetCore.Routing.Tests.csproj
+++ b/test/Microsoft.AspNetCore.Routing.Tests/Microsoft.AspNetCore.Routing.Tests.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\build\common.props" />
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp1.1;net451</TargetFrameworks>
+    <TargetFrameworks>netcoreapp1.1;net452</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netcoreapp1.1</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\Microsoft.AspNetCore.Routing\Microsoft.AspNetCore.Routing.csproj" />