diff --git a/tests/OpenTK.Tests/OpenTK.Tests.fsproj b/tests/OpenTK.Tests/OpenTK.Tests.fsproj
index d269e1c3..37a2a330 100644
--- a/tests/OpenTK.Tests/OpenTK.Tests.fsproj
+++ b/tests/OpenTK.Tests/OpenTK.Tests.fsproj
@@ -147,24 +147,6 @@
     </When>
   </Choose>
   <Choose>
-    <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v2.0' Or $(TargetFrameworkVersion) == 'v3.0' Or $(TargetFrameworkVersion) == 'v3.5')">
-      <ItemGroup>
-        <Reference Include="FSharp.Core">
-          <HintPath>..\..\packages\FSharp.Core\lib\net20\FSharp.Core.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-      </ItemGroup>
-    </When>
-    <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And $(TargetFrameworkVersion) == 'v4.0'">
-      <ItemGroup>
-        <Reference Include="FSharp.Core">
-          <HintPath>..\..\packages\FSharp.Core\lib\net40\FSharp.Core.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-      </ItemGroup>
-    </When>
     <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v4.5' Or $(TargetFrameworkVersion) == 'v4.5.1' Or $(TargetFrameworkVersion) == 'v4.5.2' Or $(TargetFrameworkVersion) == 'v4.5.3' Or $(TargetFrameworkVersion) == 'v4.6' Or $(TargetFrameworkVersion) == 'v4.6.1' Or $(TargetFrameworkVersion) == 'v4.6.2' Or $(TargetFrameworkVersion) == 'v4.6.3' Or $(TargetFrameworkVersion) == 'v4.7')">
       <ItemGroup>
         <Reference Include="FSharp.Core">
@@ -183,24 +165,6 @@
         </Reference>
       </ItemGroup>
     </When>
-    <When Condition="$(TargetFrameworkIdentifier) == '.NETStandard' And ($(TargetFrameworkVersion) == 'v1.1' Or $(TargetFrameworkVersion) == 'v1.2' Or $(TargetFrameworkVersion) == 'v1.3' Or $(TargetFrameworkVersion) == 'v1.4' Or $(TargetFrameworkVersion) == 'v1.5')">
-      <ItemGroup>
-        <Reference Include="FSharp.Core">
-          <HintPath>..\..\packages\FSharp.Core\lib\portable-net45+netcore45\FSharp.Core.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-      </ItemGroup>
-    </When>
-    <When Condition="$(TargetFrameworkIdentifier) == '.NETStandard' And $(TargetFrameworkVersion) == 'v1.0'">
-      <ItemGroup>
-        <Reference Include="FSharp.Core">
-          <HintPath>..\..\packages\FSharp.Core\lib\portable-net45+netcore45+wp8\FSharp.Core.dll</HintPath>
-          <Private>True</Private>
-          <Paket>True</Paket>
-        </Reference>
-      </ItemGroup>
-    </When>
   </Choose>
   <Choose>
     <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v4.6' Or $(TargetFrameworkVersion) == 'v4.6.1' Or $(TargetFrameworkVersion) == 'v4.6.2' Or $(TargetFrameworkVersion) == 'v4.6.3' Or $(TargetFrameworkVersion) == 'v4.7')">
@@ -1437,7 +1401,7 @@
     </When>
   </Choose>
   <Choose>
-    <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v4.6' Or $(TargetFrameworkVersion) == 'v4.6.1' Or $(TargetFrameworkVersion) == 'v4.6.2' Or $(TargetFrameworkVersion) == 'v4.6.3' Or $(TargetFrameworkVersion) == 'v4.7')">
+    <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v4.6.3' Or $(TargetFrameworkVersion) == 'v4.7')">
       <ItemGroup>
         <Reference Include="System.Threading.Thread">
           <HintPath>..\..\packages\System.Threading.Thread\lib\net46\System.Threading.Thread.dll</HintPath>
@@ -1457,7 +1421,7 @@
     </When>
   </Choose>
   <Choose>
-    <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v4.6' Or $(TargetFrameworkVersion) == 'v4.6.1' Or $(TargetFrameworkVersion) == 'v4.6.2' Or $(TargetFrameworkVersion) == 'v4.6.3' Or $(TargetFrameworkVersion) == 'v4.7')">
+    <When Condition="$(TargetFrameworkIdentifier) == '.NETFramework' And ($(TargetFrameworkVersion) == 'v4.6.3' Or $(TargetFrameworkVersion) == 'v4.7')">
       <ItemGroup>
         <Reference Include="System.Threading.ThreadPool">
           <HintPath>..\..\packages\System.Threading.ThreadPool\lib\net46\System.Threading.ThreadPool.dll</HintPath>