diff --git a/Iced/Iced.csproj b/Iced/Iced.csproj
index 91a32f4af..f96d0493e 100644
--- a/Iced/Iced.csproj
+++ b/Iced/Iced.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp2.1;netstandard2.0;net452</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard1.4;net452</TargetFrameworks>
     <!-- It's not possible to target .NET Framework 3.5 when using dotnet build
          https://github.com/Microsoft/msbuild/issues/1333 -->
     <NoTargetFrameworkNet35 Condition=" '$(NoTargetFrameworkNet35)' == '' AND '$(MSBuildRuntimeType)' == 'Core' ">true</NoTargetFrameworkNet35>
@@ -50,7 +50,8 @@ License: MIT
   </ItemGroup>
 
   <PropertyGroup>
-    <DefineConstants Condition=" $(TargetFramework.StartsWith(netcoreapp)) OR ($(TargetFramework.StartsWith(netstandard)) AND '$(TargetFramework)' != 'netstandard2.0') ">$(DefineConstants);HAS_SPAN</DefineConstants>
+    <DefineConstants Condition=" $(TargetFramework.StartsWith(netstandard)) AND !$(TargetFramework.StartsWith(netstandard1.)) AND '$(TargetFramework)' != 'netstandard2.0' ">$(DefineConstants);HAS_SPAN</DefineConstants>
+    <DefineConstants Condition=" $(TargetFramework.StartsWith(netstandard1.)) ">$(DefineConstants);NO_SERIALIZATION</DefineConstants>
   </PropertyGroup>
 
 </Project>
diff --git a/Iced/Intel/EncoderException.cs b/Iced/Intel/EncoderException.cs
index dbb59ab80..8ea5fe315 100644
--- a/Iced/Intel/EncoderException.cs
+++ b/Iced/Intel/EncoderException.cs
@@ -23,13 +23,14 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #if !NO_ENCODER
 using System;
-using System.Runtime.Serialization;
 
 namespace Iced.Intel {
 	/// <summary>
 	/// Thrown if the encoder can't encode an instruction
 	/// </summary>
+#if !NO_SERIALIZATION
 	[Serializable]
+#endif
 	public class EncoderException : Exception {
 		/// <summary>
 		/// The instruction that couldn't be encoded
@@ -43,12 +44,14 @@ namespace Iced.Intel {
 		/// <param name="instruction">Instruction</param>
 		public EncoderException(string message, in Instruction instruction) : base(message) => Instruction = instruction;
 
+#if !NO_SERIALIZATION
 		/// <summary>
 		/// Constructor
 		/// </summary>
 		/// <param name="info"></param>
 		/// <param name="context"></param>
-		protected EncoderException(SerializationInfo info, StreamingContext context) : base(info, context) { }
+		protected EncoderException(System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context) : base(info, context) { }
+#endif
 	}
 }
 #endif