diff --git a/Source/Krypton Components/ComponentFactory.Krypton.Docking/ComponentFactory.Krypton.Docking 2019.csproj b/Source/Krypton Components/ComponentFactory.Krypton.Docking/ComponentFactory.Krypton.Docking 2019.csproj
index 7de1d674..7036661b 100644
--- a/Source/Krypton Components/ComponentFactory.Krypton.Docking/ComponentFactory.Krypton.Docking 2019.csproj	
+++ b/Source/Krypton Components/ComponentFactory.Krypton.Docking/ComponentFactory.Krypton.Docking 2019.csproj	
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <PropertyGroup>
-    <TargetFrameworks>net40;net45;net451;net452;net46;net461;net462;net47;net471;net472;net48;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net40;netcoreapp3.1</TargetFrameworks>
       <LangVersion>8.0</LangVersion>
       <OutputType>Library</OutputType>
     <RootNamespace>ComponentFactory.Krypton.Docking</RootNamespace>
@@ -63,7 +63,7 @@
     <ProjectReference Include="..\ComponentFactory.Krypton.Toolkit\ComponentFactory.Krypton.Toolkit 2019.csproj" />
     <ProjectReference Include="..\ComponentFactory.Krypton.Workspace\ComponentFactory.Krypton.Workspace 2019.csproj" />
   </ItemGroup>
-  <ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'net40'">
     <Reference Include="System.Design" />
   </ItemGroup>
   <PropertyGroup>
diff --git a/Source/Krypton Components/ComponentFactory.Krypton.Navigator/ComponentFactory.Krypton.Navigator 2019.csproj b/Source/Krypton Components/ComponentFactory.Krypton.Navigator/ComponentFactory.Krypton.Navigator 2019.csproj
index ef8fc0ab..0b59d616 100644
--- a/Source/Krypton Components/ComponentFactory.Krypton.Navigator/ComponentFactory.Krypton.Navigator 2019.csproj	
+++ b/Source/Krypton Components/ComponentFactory.Krypton.Navigator/ComponentFactory.Krypton.Navigator 2019.csproj	
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <PropertyGroup>
-    <TargetFrameworks>net40;net45;net451;net452;net46;net461;net462;net47;net471;net472;net48;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net40;netcoreapp3.1</TargetFrameworks>
       <LangVersion>8.0</LangVersion>
     <OutputType>Library</OutputType>
     <RootNamespace>ComponentFactory.Krypton.Navigator</RootNamespace>
@@ -78,7 +78,7 @@
   <ItemGroup>
     <ProjectReference Include="..\ComponentFactory.Krypton.Toolkit\ComponentFactory.Krypton.Toolkit 2019.csproj" />
   </ItemGroup>
-  <ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'net40'">
     <Reference Include="System.Design" />
   </ItemGroup>
   <PropertyGroup>
diff --git a/Source/Krypton Components/ComponentFactory.Krypton.Ribbon/ComponentFactory.Krypton.Ribbon 2019.csproj b/Source/Krypton Components/ComponentFactory.Krypton.Ribbon/ComponentFactory.Krypton.Ribbon 2019.csproj
index b1d46713..0cf8aeaa 100644
--- a/Source/Krypton Components/ComponentFactory.Krypton.Ribbon/ComponentFactory.Krypton.Ribbon 2019.csproj	
+++ b/Source/Krypton Components/ComponentFactory.Krypton.Ribbon/ComponentFactory.Krypton.Ribbon 2019.csproj	
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <PropertyGroup>
-    <TargetFrameworks>net40;net45;net451;net452;net46;net461;net462;net47;net471;net472;net48;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net40;netcoreapp3.1</TargetFrameworks>
       <LangVersion>8.0</LangVersion>
     <OutputType>Library</OutputType>
     <RootNamespace>ComponentFactory.Krypton.Ribbon</RootNamespace>
@@ -102,7 +102,7 @@
   <ItemGroup>
     <ProjectReference Include="..\ComponentFactory.Krypton.Toolkit\ComponentFactory.Krypton.Toolkit 2019.csproj" />
   </ItemGroup>
-  <ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'net40'">
     <Reference Include="System.Design" />
   </ItemGroup>
   <PropertyGroup>
diff --git a/Source/Krypton Components/ComponentFactory.Krypton.Toolkit/ComponentFactory.Krypton.Toolkit 2019.csproj b/Source/Krypton Components/ComponentFactory.Krypton.Toolkit/ComponentFactory.Krypton.Toolkit 2019.csproj
index eae24c75..6041e28e 100644
--- a/Source/Krypton Components/ComponentFactory.Krypton.Toolkit/ComponentFactory.Krypton.Toolkit 2019.csproj	
+++ b/Source/Krypton Components/ComponentFactory.Krypton.Toolkit/ComponentFactory.Krypton.Toolkit 2019.csproj	
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
     <PropertyGroup>
-        <TargetFrameworks>net40;net45;net451;net452;net46;net461;net462;net47;net471;net472;net48;netcoreapp3.1</TargetFrameworks>
+        <TargetFrameworks>net40;netcoreapp3.1</TargetFrameworks>
         <LangVersion>8.0</LangVersion>
         <OutputType>Library</OutputType>
         <RootNamespace>ComponentFactory.Krypton.Toolkit</RootNamespace>
@@ -344,7 +344,7 @@
         <EmbeddedResource Remove="Toolkit\KryptonCheckButtonCollectionForm.resx" />
         <EmbeddedResource Remove="Toolkit\PaletteDrawBordersSelector.resx" />
     </ItemGroup>
-    <ItemGroup>
+    <ItemGroup Condition="'$(TargetFramework)' == 'net40'">
       <Reference Include="System.Design" />
     </ItemGroup>
     <PropertyGroup>
diff --git a/Source/Krypton Components/ComponentFactory.Krypton.Workspace/ComponentFactory.Krypton.Workspace 2019.csproj b/Source/Krypton Components/ComponentFactory.Krypton.Workspace/ComponentFactory.Krypton.Workspace 2019.csproj
index cab26bc7..b93e1471 100644
--- a/Source/Krypton Components/ComponentFactory.Krypton.Workspace/ComponentFactory.Krypton.Workspace 2019.csproj	
+++ b/Source/Krypton Components/ComponentFactory.Krypton.Workspace/ComponentFactory.Krypton.Workspace 2019.csproj	
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <PropertyGroup>
-    <TargetFrameworks>net40;net45;net451;net452;net46;net461;net462;net47;net471;net472;net48;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net40;netcoreapp3.1</TargetFrameworks>
       <LangVersion>8.0</LangVersion>
     <OutputType>Library</OutputType>
     <RootNamespace>ComponentFactory.Krypton.Workspace</RootNamespace>
@@ -54,7 +54,7 @@
   <ItemGroup>
     <Compile Include="..\ComponentFactory.Krypton.Toolkit\General\GlobalSuppressions.cs" Link="General\GlobalSuppressions.cs" />
   </ItemGroup>
-  <ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'net40'">
     <Reference Include="System.Design" />
   </ItemGroup>
   <PropertyGroup>
diff --git a/Source/Krypton Components/TestApp/TestApp.csproj b/Source/Krypton Components/TestApp/TestApp.csproj
index e2a0a70f..758094c4 100644
--- a/Source/Krypton Components/TestApp/TestApp.csproj	
+++ b/Source/Krypton Components/TestApp/TestApp.csproj	
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <PropertyGroup>
-    <TargetFrameworks>net40;net45;net451;net452;net46;net461;net462;net47;net471;net472;net48;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net472;netcoreapp3.1</TargetFrameworks>
       <LangVersion>8.0</LangVersion>
     <OutputType>WinExe</OutputType>
     <AssemblyVersion>19.4.168.9</AssemblyVersion>