diff --git a/src/NTwain/NTwain.csproj b/src/NTwain/NTwain.csproj
index 34db1ec..0f27b17 100644
--- a/src/NTwain/NTwain.csproj
+++ b/src/NTwain/NTwain.csproj
@@ -13,7 +13,10 @@
     <UseWPF>true</UseWPF>
   </PropertyGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net462'">
+    <PackageReference Include="System.Buffers" Version="4.5.1" />
+  </ItemGroup>
+  <ItemGroup Condition=" '$(TargetFramework)' != 'net462'">
     <PackageReference Include="System.Text.Encoding.CodePages" Version="7.0.0" />
   </ItemGroup>
 
diff --git a/src/NTwain/TwainSession.cs b/src/NTwain/TwainSession.cs
index cfe0090..214cc31 100644
--- a/src/NTwain/TwainSession.cs
+++ b/src/NTwain/TwainSession.cs
@@ -64,7 +64,9 @@ namespace NTwain
       // todo: find a better place for this
       if (!__encodingRegistered)
       {
+#if !NETFRAMEWORK
         Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+#endif
         __encodingRegistered = true;
       }