diff --git a/ICSharpCode.Decompiler/ICSharpCode.Decompiler.csproj b/ICSharpCode.Decompiler/ICSharpCode.Decompiler.csproj
index 93e3c5389..07d6c2668 100644
--- a/ICSharpCode.Decompiler/ICSharpCode.Decompiler.csproj
+++ b/ICSharpCode.Decompiler/ICSharpCode.Decompiler.csproj
@@ -273,6 +273,7 @@
     <Compile Include="DotNetCore\DotNetCorePathFinder.cs" />
     <Compile Include="DotNetCore\DotNetCorePathFinderExtensions.cs" />
     <Compile Include="DotNetCore\UnresolvedAssemblyNameReference.cs" />
+    <Compile Include="IL\ILAstWritingOptions.cs" />
     <Compile Include="IL\SequencePoint.cs" />
     <Compile Include="IL\Instructions\CallIndirect.cs" />
     <Compile Include="IL\Transforms\EarlyExpressionTransforms.cs" />
diff --git a/ICSharpCode.Decompiler/IL/ILAstWritingOptions.cs b/ICSharpCode.Decompiler/IL/ILAstWritingOptions.cs
new file mode 100644
index 000000000..42b8ddf66
--- /dev/null
+++ b/ICSharpCode.Decompiler/IL/ILAstWritingOptions.cs
@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+namespace ICSharpCode.Decompiler.IL
+{
+	public class ILAstWritingOptions : INotifyPropertyChanged
+	{
+		private bool useLogicOperationSugar;
+		private bool useFieldSugar;
+		private bool showILRanges;
+
+		/// <summary>
+		/// Sugar for logic.not/and/or.
+		/// </summary>
+		public bool UseLogicOperationSugar {
+			get { return useLogicOperationSugar; }
+			set {
+				if (useLogicOperationSugar != value) {
+					useLogicOperationSugar = value;
+					OnPropertyChanged();
+				}
+			}
+		}
+
+		/// <summary>
+		/// Sugar for ldfld/stfld.
+		/// </summary>
+		public bool UseFieldSugar {
+			get { return useFieldSugar; }
+			set {
+				if (useFieldSugar != value) {
+					useFieldSugar = value;
+					OnPropertyChanged();
+				}
+			}
+		}
+
+		/// <summary>
+		/// Show IL ranges in ILAst output.
+		/// </summary>
+		public bool ShowILRanges {
+			get { return showILRanges; }
+			set {
+				if (showILRanges != value) {
+					showILRanges = value;
+					OnPropertyChanged();
+				}
+			}
+		}
+
+		protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
+		{
+			OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
+		}
+
+		protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
+		{
+			PropertyChanged?.Invoke(this, e);
+		}
+
+		public event PropertyChangedEventHandler PropertyChanged;
+	}
+}
diff --git a/ICSharpCode.Decompiler/IL/Instructions/ILInstruction.cs b/ICSharpCode.Decompiler/IL/Instructions/ILInstruction.cs
index b4042364e..d0bce881a 100644
--- a/ICSharpCode.Decompiler/IL/Instructions/ILInstruction.cs
+++ b/ICSharpCode.Decompiler/IL/Instructions/ILInstruction.cs
@@ -745,17 +745,4 @@ namespace ICSharpCode.Decompiler.IL
 		/// </summary>
 		StackType UnderlyingResultType { get; }
 	}
-
-	public class ILAstWritingOptions
-	{
-		/// <summary>
-		/// Sugar for logic.not/and/or.
-		/// </summary>
-		public bool UseLogicOperationSugar { get; set; }
-
-		/// <summary>
-		/// Sugar for ldfld/stfld.
-		/// </summary>
-		public bool UseFieldSugar { get; set; }
-	}
 }