diff --git a/OBD.NET/OBD.NET.Common/OBD.NET.Common.csproj b/OBD.NET/OBD.NET.Common/OBD.NET.Common.csproj
index 1a6160b..1e746f1 100644
--- a/OBD.NET/OBD.NET.Common/OBD.NET.Common.csproj
+++ b/OBD.NET/OBD.NET.Common/OBD.NET.Common.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;netstandard1.4</TargetFrameworks>
+    <TargetFrameworks>net5.0;net6.0;netstandard1.4</TargetFrameworks>
     <Authors>Darth Affe / Roman Lumetsberger</Authors>
     <Company>-</Company>
     <Product>OBD.NET</Product>
@@ -25,6 +25,10 @@
     <DefineConstants>NET5_0;NETFULL</DefineConstants>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(TargetFramework)' == 'net6.0'">
+    <DefineConstants>NET6_0;NETFULL</DefineConstants>
+  </PropertyGroup>
+
   <PropertyGroup Condition="'$(TargetFramework)' == 'netstandard1.4'">
     <DefineConstants>NETCORE;NETSTANDARD;NETSTANDARD1_4</DefineConstants>
   </PropertyGroup>
@@ -43,12 +47,4 @@
     <DefineConstants>$(DefineConstants);RELEASE</DefineConstants>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net6.0|AnyCPU'">
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net6.0|AnyCPU'">
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-
 </Project>
\ No newline at end of file
diff --git a/OBD.NET/ODB.NET.Desktop/ODB.NET.Desktop.csproj b/OBD.NET/ODB.NET.Desktop/ODB.NET.Desktop.csproj
index c5d74d6..379ca60 100644
--- a/OBD.NET/ODB.NET.Desktop/ODB.NET.Desktop.csproj
+++ b/OBD.NET/ODB.NET.Desktop/ODB.NET.Desktop.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;net461</TargetFrameworks>
+    <TargetFrameworks>net5.0;net6.0;net461</TargetFrameworks>
     <Authors>Darth Affe / Roman Lumetsberger</Authors>
     <Company>-</Company>
     <Product>OBD.NET</Product>
@@ -25,6 +25,10 @@
     <DefineConstants>NET5_0;NETFULL</DefineConstants>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(TargetFramework)' == 'net6.0'">
+    <DefineConstants>NET6_0;NETFULL</DefineConstants>
+  </PropertyGroup>
+
   <PropertyGroup Condition="'$(TargetFramework)' == 'net461'">
     <DefineConstants>NET461;NETFULL</DefineConstants>
   </PropertyGroup>
@@ -47,7 +51,7 @@
     <PackageReference Include="System.IO.Ports" Version="5.0.1" />
   </ItemGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
     <PackageReference Include="System.IO.Ports" Version="6.0.0" />
   </ItemGroup>