diff --git a/src/Libraries/NRefactory/Project/Src/Ast/TypeReference.cs b/src/Libraries/NRefactory/Project/Src/Ast/TypeReference.cs
index 2039b992f8..467bbae7c1 100644
--- a/src/Libraries/NRefactory/Project/Src/Ast/TypeReference.cs
+++ b/src/Libraries/NRefactory/Project/Src/Ast/TypeReference.cs
@@ -266,7 +266,7 @@ namespace ICSharpCode.NRefactory.Ast
 			this.Type = type;
 		}
 		
-		[Obsolete("Type and SystemType are no longer distinguised - use the (string type, bool isKeyword) constructor instead!")]
+		[Obsolete("Type and SystemType are no longer distinguished - use the (string type, bool isKeyword) constructor instead!")]
 		public TypeReference(string type, string systemType)
 		{
 			this.Type = systemType;
diff --git a/src/Main/Base/Project/Src/TextEditor/Commands/CodeGenerators/ToStringCodeGenerator.cs b/src/Main/Base/Project/Src/TextEditor/Commands/CodeGenerators/ToStringCodeGenerator.cs
index 45bee96d63..a4231dfb95 100644
--- a/src/Main/Base/Project/Src/TextEditor/Commands/CodeGenerators/ToStringCodeGenerator.cs
+++ b/src/Main/Base/Project/Src/TextEditor/Commands/CodeGenerators/ToStringCodeGenerator.cs
@@ -18,7 +18,7 @@ namespace ICSharpCode.SharpDevelop.DefaultEditor.Commands
 	{
 		public override void GenerateCode(List<AbstractNode> nodes, IList items)
 		{
-			TypeReference stringReference = new TypeReference("System.String");
+			TypeReference stringReference = new TypeReference("System.String", true);
 			MethodDeclaration method = new MethodDeclaration {
 				Name = "ToString",
 				Modifier = Modifiers.Public | Modifiers.Override,
diff --git a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/NRefactoryASTConvertVisitor.cs b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/NRefactoryASTConvertVisitor.cs
index 681e199325..71aadbacf4 100644
--- a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/NRefactoryASTConvertVisitor.cs
+++ b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/NRefactoryASTConvertVisitor.cs
@@ -724,7 +724,7 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 				                                    region, c);
 				del.Modifiers |= ModifierEnum.Synthetic;
 				CreateDelegate(del, eventDeclaration.Name + "EventHandler",
-				               new AST.TypeReference("System.Void"),
+				               new AST.TypeReference("System.Void", true),
 				               new AST.TemplateDefinition[0],
 				               eventDeclaration.Parameters);
 				type = del.DefaultReturnType;
diff --git a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/Refactoring/CodeGenerator.cs b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/Refactoring/CodeGenerator.cs
index 084198fc29..958b8863ab 100644
--- a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/Refactoring/CodeGenerator.cs
+++ b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/Refactoring/CodeGenerator.cs
@@ -413,7 +413,7 @@ namespace ICSharpCode.SharpDevelop.Dom.Refactoring
 			MethodDeclaration method = new MethodDeclaration {
 				Name = "On" + e.Name,
 				Modifier = ConvertModifier(modifier, context),
-				TypeReference = new TypeReference("System.Void"),
+				TypeReference = new TypeReference("System.Void", true),
 				Parameters = parameters
 			};