diff --git a/src/OpenTK/OpenTK.Standard.csproj b/src/OpenTK/OpenTK.Standard.csproj
index ef6d4ae3..b3336747 100644
--- a/src/OpenTK/OpenTK.Standard.csproj
+++ b/src/OpenTK/OpenTK.Standard.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
     <AssemblyName>OpenTK</AssemblyName>
-    <TargetFramework>netstandard2.1</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <RootNamespace>OpenTK</RootNamespace>
 	<DefineConstants>$(DefineConstants);WIN32;CARBON;X11;SDL2;OPENGL;OPENGLES;MINIMAL</DefineConstants>    
   </PropertyGroup>