diff --git a/test/Microsoft.AspNetCore.Hosting.Tests/Microsoft.AspNetCore.Hosting.Tests.csproj b/test/Microsoft.AspNetCore.Hosting.Tests/Microsoft.AspNetCore.Hosting.Tests.csproj
index cab2821adc..2742d30815 100644
--- a/test/Microsoft.AspNetCore.Hosting.Tests/Microsoft.AspNetCore.Hosting.Tests.csproj
+++ b/test/Microsoft.AspNetCore.Hosting.Tests/Microsoft.AspNetCore.Hosting.Tests.csproj
@@ -3,8 +3,7 @@
   <Import Project="..\..\build\common.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp1.1</TargetFrameworks>
-    <TargetFrameworks Condition="'$(OS)'=='Windows_NT'">$(TargetFrameworks);net451</TargetFrameworks>
+    <TargetFrameworks>netcoreapp1.1;net451</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/test/Microsoft.AspNetCore.TestHost.Tests/Microsoft.AspNetCore.TestHost.Tests.csproj b/test/Microsoft.AspNetCore.TestHost.Tests/Microsoft.AspNetCore.TestHost.Tests.csproj
index 634795305b..c35143f324 100644
--- a/test/Microsoft.AspNetCore.TestHost.Tests/Microsoft.AspNetCore.TestHost.Tests.csproj
+++ b/test/Microsoft.AspNetCore.TestHost.Tests/Microsoft.AspNetCore.TestHost.Tests.csproj
@@ -3,8 +3,7 @@
   <Import Project="..\..\build\common.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp1.1</TargetFrameworks>
-    <TargetFrameworks Condition="'$(OS)'=='Windows_NT'">$(TargetFrameworks);net451</TargetFrameworks>
+    <TargetFrameworks>netcoreapp1.1;net451</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>