diff --git a/src/OpenTK.GLControl/OpenTK.GLControl.csproj b/src/OpenTK.GLControl/OpenTK.GLControl.csproj
index cda00aea..6f753a06 100644
--- a/src/OpenTK.GLControl/OpenTK.GLControl.csproj
+++ b/src/OpenTK.GLControl/OpenTK.GLControl.csproj
@@ -14,7 +14,7 @@
     <DefaultHTMLPageLayout>Grid</DefaultHTMLPageLayout>
     <DefaultTargetSchema>IE50</DefaultTargetSchema>
     <DelaySign>false</DelaySign>
-    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
     <OutputType>Library</OutputType>
     <AppDesignerFolder>
     </AppDesignerFolder>
diff --git a/src/OpenTK.GLWidget/OpenTK.GLWidget.csproj b/src/OpenTK.GLWidget/OpenTK.GLWidget.csproj
index 6e771eba..712534a6 100644
--- a/src/OpenTK.GLWidget/OpenTK.GLWidget.csproj
+++ b/src/OpenTK.GLWidget/OpenTK.GLWidget.csproj
@@ -39,7 +39,7 @@
     <IsWebBootstrapper>false</IsWebBootstrapper>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
     <TargetFrameworkProfile />
     <Deterministic>true</Deterministic>
     <LangVersion>6</LangVersion>