diff --git a/src/libraries/Microsoft.Extensions.Caching.Memory/tests/Microsoft.Extensions.Caching.Memory.Tests.csproj b/src/libraries/Microsoft.Extensions.Caching.Memory/tests/Microsoft.Extensions.Caching.Memory.Tests.csproj
index a2fe761c13a85..488179196dfb3 100644
--- a/src/libraries/Microsoft.Extensions.Caching.Memory/tests/Microsoft.Extensions.Caching.Memory.Tests.csproj
+++ b/src/libraries/Microsoft.Extensions.Caching.Memory/tests/Microsoft.Extensions.Caching.Memory.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>$(StandardTestTfms)</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1;net461</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/libraries/Microsoft.Extensions.Http/tests/Microsoft.Extensions.Http.Tests.csproj b/src/libraries/Microsoft.Extensions.Http/tests/Microsoft.Extensions.Http.Tests.csproj
index d6700d10a116a..f6ef1dc80179b 100644
--- a/src/libraries/Microsoft.Extensions.Http/tests/Microsoft.Extensions.Http.Tests.csproj
+++ b/src/libraries/Microsoft.Extensions.Http/tests/Microsoft.Extensions.Http.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>$(StandardTestTfms)</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1;net461</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>