diff --git a/src/AddIns/Misc/Debugger/Debugger.Tests/Project/Src/DebuggerTests.cs b/src/AddIns/Misc/Debugger/Debugger.Tests/Project/Src/DebuggerTests.cs
index 53f4c3a34d..d76d8990e8 100644
--- a/src/AddIns/Misc/Debugger/Debugger.Tests/Project/Src/DebuggerTests.cs
+++ b/src/AddIns/Misc/Debugger/Debugger.Tests/Project/Src/DebuggerTests.cs
@@ -12,7 +12,7 @@ using NIgnore = NUnit.Framework.IgnoreAttribute;
 namespace Debugger.Tests
 {
 	[TestFixture]
-	//[NIgnore]
+	[NIgnore("Debugger is broken on .NET 4.0 Beta 2")]
 	public partial class DebuggerTests: DebuggerTestsBase
 	{