diff --git a/src/FSharpSource.targets b/src/FSharpSource.targets
index 55dc21777a9..6271ca7a8d7 100644
--- a/src/FSharpSource.targets
+++ b/src/FSharpSource.targets
@@ -185,6 +185,7 @@
     <DefineConstants>$(DefineConstants);NETSTANDARD1_6</DefineConstants>
     <DefineConstants>$(DefineConstants);NETCOREAPP1_0</DefineConstants>
     <OtherFlags>$(OtherFlags) --simpleresolution</OtherFlags>
+    <TargetProfile>netcore</TargetProfile>
     <TargetFrameworkProfile></TargetFrameworkProfile>                                   <!-- We are currently directly referencing corefx assemblies, so profile7 is not really true -->
     <TargetFrameworkVersion Condition="'$(TargetFrameworkVersion)' == ''">v5.0</TargetFrameworkVersion>
     <ImplicitlyExpandTargetFramework>false</ImplicitlyExpandTargetFramework>            <!-- To stop msbuild being helpfull and referencing the dlls for the profile -->
@@ -278,8 +279,8 @@
     <DefineConstants>$(DefineConstants);FX_NO_MISSINGMETHODEXCEPTION</DefineConstants>
     <DefineConstants>$(DefineConstants);FX_RESHAPED_REFLECTION</DefineConstants>
     <DefineConstants>$(DefineConstants);FX_NO_EXIT_CONTEXT_FLAGS</DefineConstants> 
-    <DefineConstants>$(DefineConstants);FX_EVENTWAITHANDLE_NO_IDISPOSABLE</DefineConstants> 
-    <TargetingNetCorePortable>true</TargetingNetCorePortable>
+    <DefineConstants>$(DefineConstants);FX_EVENTWAITHANDLE_NO_IDISPOSABLE</DefineConstants>
+    <TargetProfile>netcore</TargetProfile>
     <TargetFrameworkProfile>Profile7</TargetFrameworkProfile>
     <TargetFrameworkVersion Condition="'$(TargetFrameworkVersion)' == ''">v4.5</TargetFrameworkVersion>    
   </PropertyGroup>
@@ -317,6 +318,7 @@
     <DefineConstants>$(DefineConstants);FX_NO_MISSINGMETHODEXCEPTION</DefineConstants>
     <DefineConstants>$(DefineConstants);FX_NO_CONCURRENT_DICTIONARY</DefineConstants>
     <DefineConstants>$(DefineConstants);FX_ATLEAST_LINQ</DefineConstants>
+    <TargetProfile>netcore</TargetProfile>
     <TargetFrameworkProfile>Profile78</TargetFrameworkProfile>
     <TargetFrameworkVersion Condition="'$(TargetFrameworkVersion)' == ''">v4.5</TargetFrameworkVersion>
   </PropertyGroup>
@@ -354,6 +356,7 @@
     <DefineConstants>$(DefineConstants);FX_NO_MISSINGMETHODEXCEPTION</DefineConstants>
     <DefineConstants>$(DefineConstants);FX_NO_CONCURRENT_DICTIONARY</DefineConstants>
     <DefineConstants>$(DefineConstants);FX_ATLEAST_LINQ</DefineConstants>
+    <TargetProfile>netcore</TargetProfile>
     <TargetFrameworkProfile>Profile259</TargetFrameworkProfile>
     <TargetFrameworkVersion Condition="'$(TargetFrameworkVersion)' == ''">v4.5</TargetFrameworkVersion>
   </PropertyGroup>
diff --git a/src/fsharp/FSharp.Build/FSharp.Build.fsproj b/src/fsharp/FSharp.Build/FSharp.Build.fsproj
index 4a7892308d3..24b8e54be7b 100644
--- a/src/fsharp/FSharp.Build/FSharp.Build.fsproj
+++ b/src/fsharp/FSharp.Build/FSharp.Build.fsproj
@@ -12,7 +12,6 @@
     <AssemblyName>FSharp.Build</AssemblyName>
     <AllowCrossTargeting>true</AllowCrossTargeting>
     <ProjectGuid>{702A7979-BCF9-4C41-853E-3ADFC9897890}</ProjectGuid>
-    <OtherFlags Condition=" '$(TargetFramework)'=='coreclr'">$(OtherFlags) --targetprofile:netcore</OtherFlags>
     <FX_NOLOADER>true</FX_NOLOADER>
   </PropertyGroup>
   <ItemGroup>
diff --git a/src/fsharp/FSharp.Compiler.Interactive.Settings/FSharp.Compiler.Interactive.Settings.fsproj b/src/fsharp/FSharp.Compiler.Interactive.Settings/FSharp.Compiler.Interactive.Settings.fsproj
index b34a3d459a2..5f31ed07889 100644
--- a/src/fsharp/FSharp.Compiler.Interactive.Settings/FSharp.Compiler.Interactive.Settings.fsproj
+++ b/src/fsharp/FSharp.Compiler.Interactive.Settings/FSharp.Compiler.Interactive.Settings.fsproj
@@ -13,7 +13,6 @@
     <DefineConstants>EXTENSIONTYPING;$(DefineConstants)</DefineConstants>
     <AssemblyName>FSharp.Compiler.Interactive.Settings</AssemblyName>
     <FileAlignment>512</FileAlignment>
-    <OtherFlags Condition=" '$(TargetFramework)'=='coreclr'">$(OtherFlags) --targetprofile:netcore</OtherFlags>
   </PropertyGroup>
   <ItemGroup>
     <FsSrGen Include="..\FSInteractiveSettings.txt">
diff --git a/src/fsharp/FSharp.Compiler/FSharp.Compiler.fsproj b/src/fsharp/FSharp.Compiler/FSharp.Compiler.fsproj
index 767e135a71d..85d61743395 100644
--- a/src/fsharp/FSharp.Compiler/FSharp.Compiler.fsproj
+++ b/src/fsharp/FSharp.Compiler/FSharp.Compiler.fsproj
@@ -20,7 +20,6 @@
     <AllowCrossTargeting>true</AllowCrossTargeting>
     <BaseAddress>0x06800000</BaseAddress>
     <OtherFlags>$(OtherFlags) /warnon:1182</OtherFlags>
-    <OtherFlags Condition=" '$(TargetFramework)'=='coreclr'">$(OtherFlags) --targetprofile:netcore</OtherFlags>
   </PropertyGroup>
   <!-- References -->
   <Import Project="$(FSharpSourcesRoot)\.nuget\NuGet.targets" Condition="Exists('$(FSharpSourcesRoot)\.nuget\NuGet.targets')" />
diff --git a/src/fsharp/FSharp.Core/FSharp.Core.fsproj b/src/fsharp/FSharp.Core/FSharp.Core.fsproj
index 9029b6a4fb9..4953d5cfc59 100644
--- a/src/fsharp/FSharp.Core/FSharp.Core.fsproj
+++ b/src/fsharp/FSharp.Core/FSharp.Core.fsproj
@@ -19,10 +19,10 @@
     <OtherFlags>$(OtherFlags) --warnon:1182 --compiling-fslib --maxerrors:20   --extraoptimizationloops:1 </OtherFlags>
     <OtherFlags Condition=" '$(TargetFramework)'=='net20'">$(OtherFlags)       --compiling-fslib-20:"$(SystemRoot)\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll" </OtherFlags>
     <OtherFlags Condition=" '$(TargetFramework)'=='net40'">$(OtherFlags)       --compiling-fslib-40</OtherFlags>
-    <OtherFlags Condition=" '$(TargetFramework)'=='coreclr'">$(OtherFlags)     --compiling-fslib-40 --targetprofile:netcore</OtherFlags>
-    <OtherFlags Condition=" '$(TargetFramework)'=='portable7'">$(OtherFlags)   --compiling-fslib-40 --targetprofile:netcore</OtherFlags>
-    <OtherFlags Condition=" '$(TargetFramework)'=='portable78'">$(OtherFlags)  --compiling-fslib-40 --compiling-fslib-nobigint --targetprofile:netcore</OtherFlags>
-    <OtherFlags Condition=" '$(TargetFramework)'=='portable259'">$(OtherFlags) --compiling-fslib-40 --compiling-fslib-nobigint --targetprofile:netcore</OtherFlags>
+    <OtherFlags Condition=" '$(TargetFramework)'=='coreclr'">$(OtherFlags)     --compiling-fslib-40</OtherFlags>
+    <OtherFlags Condition=" '$(TargetFramework)'=='portable7'">$(OtherFlags)   --compiling-fslib-40</OtherFlags>
+    <OtherFlags Condition=" '$(TargetFramework)'=='portable78'">$(OtherFlags)  --compiling-fslib-40 --compiling-fslib-nobigint</OtherFlags>
+    <OtherFlags Condition=" '$(TargetFramework)'=='portable259'">$(OtherFlags) --compiling-fslib-40 --compiling-fslib-nobigint</OtherFlags>
   </PropertyGroup>
   <ItemGroup>
     <FilesToLocalize Include="$(OutDir)$(AssemblyName).dll">
diff --git a/src/fsharp/Fsc/Fsc.fsproj b/src/fsharp/Fsc/Fsc.fsproj
index 9484806f859..cc70d114ec1 100644
--- a/src/fsharp/Fsc/Fsc.fsproj
+++ b/src/fsharp/Fsc/Fsc.fsproj
@@ -22,7 +22,6 @@
     <AllowCrossTargeting>true</AllowCrossTargeting>
     <TargetFrameworkVersion Condition="'$(TargetFramework)'=='net20'">v2.0</TargetFrameworkVersion>
     <OtherFlags>$(OtherFlags) --warnon:1182</OtherFlags>
-    <OtherFlags Condition=" '$(TargetFramework)'=='coreclr'">$(OtherFlags) --targetprofile:netcore</OtherFlags>
   </PropertyGroup>
   <ItemGroup>
     <FilesToLocalize Include="$(OutDir)$(AssemblyName).exe">
diff --git a/src/fsharp/fsi/Fsi.fsproj b/src/fsharp/fsi/Fsi.fsproj
index 147cc5eb398..80496f21412 100644
--- a/src/fsharp/fsi/Fsi.fsproj
+++ b/src/fsharp/fsi/Fsi.fsproj
@@ -24,7 +24,6 @@
     <OtherFlags>$(OtherFlags) --warnon:1182</OtherFlags>
     <Win32Resource>fsi.res</Win32Resource>
     <TargetFrameworkVersion Condition="'$(TargetFramework)' != 'coreclr'">v4.6</TargetFrameworkVersion>
-    <OtherFlags Condition=" '$(TargetFramework)'=='coreclr'">$(OtherFlags) --targetprofile:netcore</OtherFlags>
   </PropertyGroup>
   <ItemGroup>
     <FilesToLocalize Include="$(OutDir)$(AssemblyName).exe">