diff --git a/src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/TreeModel/ValueNode.cs b/src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/TreeModel/ValueNode.cs
index 289c04417f..cca1163cfd 100644
--- a/src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/TreeModel/ValueNode.cs
+++ b/src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/TreeModel/ValueNode.cs
@@ -52,7 +52,7 @@ namespace Debugger.AddIn.TreeModel
 			if (ShowValuesInHexadecimal && val.IsInteger) {
 				this.Text = String.Format("0x{0:X}", val.PrimitiveValue);
 			} else {
-				this.Text =  val.AsString;
+				this.Text = val.AsString;
 			}
 			
 			if (val.Type != null) {
@@ -69,6 +69,11 @@ namespace Debugger.AddIn.TreeModel
 			} else {
 				this.ChildNodes = null;
 			}
+			
+			// Do last since it may expire the object
+			if (val.IsObject) {
+				this.Text = val.InvokeToString();
+			}
 		}
 		
 		public bool CanSetText {
diff --git a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Values/Value.Object.cs b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Values/Value.Object.cs
index b9caf601b7..004d7f1838 100644
--- a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Values/Value.Object.cs
+++ b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Values/Value.Object.cs
@@ -235,6 +235,15 @@ namespace Debugger
 			);
 		}
 		
+		/// <summary> Invoke the ToString() method </summary>
+		public string InvokeToString()
+		{
+			if (!IsObject) {
+				throw new DebuggerException("ToString can be only invoked on object");
+			}
+			return Eval.InvokeMethod(Process, typeof(object), "ToString", this, new Value[] {}).AsString;
+		}
+		
 		#region Convenience overload methods
 		
 		/// <summary> Asynchronously invoke the method </summary>
diff --git a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Values/Value.cs b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Values/Value.cs
index f60fe5e573..674ba5700a 100644
--- a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Values/Value.cs
+++ b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Values/Value.cs
@@ -45,10 +45,9 @@ namespace Debugger
 		/// <summary> Gets a string representation of the value </summary>
 		public string AsString {
 			get {
-				if (IsNull)      return "<null>";
+				if (IsNull)      return "null";
 				if (IsArray)     return "{" + this.Type.FullName + "}";
 				if (IsObject)    return "{" + this.Type.FullName + "}";
-				//if (IsObject)    return Eval.InvokeMethod(Process, typeof(object), "ToString", this, new Value[] {}).AsString;
 				if (IsPrimitive) return PrimitiveValue != null ? PrimitiveValue.ToString() : String.Empty;
 				throw new DebuggerException("Unknown value type");
 			}