diff --git a/src/ExtendedXmlSerializer/ExtensionModel/Content/Members/AllowedMemberValuesExtension.cs b/src/ExtendedXmlSerializer/ExtensionModel/Content/Members/AllowedMemberValuesExtension.cs
index 940f15366..d7158cfe4 100644
--- a/src/ExtendedXmlSerializer/ExtensionModel/Content/Members/AllowedMemberValuesExtension.cs
+++ b/src/ExtendedXmlSerializer/ExtensionModel/Content/Members/AllowedMemberValuesExtension.cs
@@ -67,7 +67,7 @@ IAllowedMemberValues Register(IServiceProvider arg)
 				                                     .ToDictionary(x => x.Key, x => (ISpecification<object>)x.Value)
 				                                     .Concat(Instances)
 				                                     .GroupBy(x => x.Key)
-				                                     .ToDictionary(x => x.Key, Create)),
+				                                     .ToDictionary(x => x.Key, Create, Defaults.MemberComparer)),
 				fallback = _allowed == AllowAssignedValues
 					           ? Source.Default
 					           : new FixedInstanceSource<MemberInfo, IAllowedValueSpecification>(_allowed);
diff --git a/src/ExtendedXmlSerializer/ExtensionModel/Defaults.cs b/src/ExtendedXmlSerializer/ExtensionModel/Defaults.cs
index 9d53d519b..7f9dd5e0b 100644
--- a/src/ExtendedXmlSerializer/ExtensionModel/Defaults.cs
+++ b/src/ExtendedXmlSerializer/ExtensionModel/Defaults.cs
@@ -1,4 +1,5 @@
 using ExtendedXmlSerializer.ExtensionModel.References;
+using ExtendedXmlSerializer.ReflectionModel;
 using System.Reflection;
 
 namespace ExtendedXmlSerializer.ExtensionModel
@@ -6,5 +7,12 @@ namespace ExtendedXmlSerializer.ExtensionModel
 	static class Defaults
 	{
 		public static TypeInfo Reference { get; } = typeof(ReferenceIdentity).GetTypeInfo();
+
+		public static ITypeComparer TypeComparer { get; }
+			= new CompositeTypeComparer(ImplementedTypeComparer.Default,
+			                            TypeIdentityComparer.Default,
+			                            InheritedTypeComparer.Default);
+
+		public static IMemberComparer MemberComparer { get; } = new MemberComparer(TypeComparer);
 	}
 }
\ No newline at end of file
diff --git a/src/ExtendedXmlSerializer/ExtensionModel/Xml/CustomSerializers.cs b/src/ExtendedXmlSerializer/ExtensionModel/Xml/CustomSerializers.cs
index 09c45897d..6615c03a9 100644
--- a/src/ExtendedXmlSerializer/ExtensionModel/Xml/CustomSerializers.cs
+++ b/src/ExtendedXmlSerializer/ExtensionModel/Xml/CustomSerializers.cs
@@ -1,16 +1,11 @@
-using ExtendedXmlSerializer.ReflectionModel;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Reflection;
 
 namespace ExtendedXmlSerializer.ExtensionModel.Xml
 {
 	sealed class CustomSerializers : Metadata<TypeInfo, ContentModel.ISerializer>, ICustomSerializers
 	{
-		readonly static CompositeTypeComparer Comparer = new CompositeTypeComparer(ImplementedTypeComparer.Default,
-		                                                                           TypeIdentityComparer.Default,
-		                                                                           InheritedTypeComparer.Default);
-
-		public CustomSerializers() : this(Comparer) {}
+		public CustomSerializers() : this(ExtensionModel.Defaults.TypeComparer) {}
 
 		public CustomSerializers(IEqualityComparer<TypeInfo> comparer) : base(comparer) {}
 	}
diff --git a/test/ExtendedXmlSerializer.Tests.ReportedIssues/Issue411Tests.cs b/test/ExtendedXmlSerializer.Tests.ReportedIssues/Issue411Tests.cs
new file mode 100644
index 000000000..ef09a07c6
--- /dev/null
+++ b/test/ExtendedXmlSerializer.Tests.ReportedIssues/Issue411Tests.cs
@@ -0,0 +1,32 @@
+using ExtendedXmlSerializer.Configuration;
+using ExtendedXmlSerializer.Tests.ReportedIssues.Support;
+using FluentAssertions;
+using Xunit;
+
+namespace ExtendedXmlSerializer.Tests.ReportedIssues
+{
+	public sealed class Issue411Tests
+	{
+		[Fact]
+		public void Verify()
+		{
+			var serializer = new ConfigurationContainer().Type<SubjectBase>()
+			                                             .Member(x => x.Message)
+			                                             .EmitWhen(x => false)
+			                                             .Create()
+			                                             .ForTesting();
+
+			serializer.Cycle(new Subject {Message = "Hello World!"}).Message.Should().BeNull();
+		}
+
+		sealed class Subject : SubjectBase
+		{
+			public override string Message { get; set; }
+		}
+
+		public abstract class SubjectBase
+		{
+			public abstract string Message { get; set; }
+		}
+	}
+}
\ No newline at end of file