diff --git a/src/AddIns/BackendBindings/CSharpBinding/Tests/MockTextEditor.cs b/src/AddIns/BackendBindings/CSharpBinding/Tests/MockTextEditor.cs
index 057d507595..a28a70942c 100644
--- a/src/AddIns/BackendBindings/CSharpBinding/Tests/MockTextEditor.cs
+++ b/src/AddIns/BackendBindings/CSharpBinding/Tests/MockTextEditor.cs
@@ -31,7 +31,7 @@ namespace CSharpBinding.Tests
 			pc = new DefaultProjectContent();
 			pc.ReferencedContents.Add(AssemblyParserService.DefaultProjectContentRegistry.Mscorlib);
 			
-			this.TextEditor.TextArea.TextView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(this.TextEditor));
+//			this.TextEditor.TextArea.TextView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(this.TextEditor));
 			this.TextEditor.SyntaxHighlighting = HighlightingManager.Instance.GetDefinition("C#");
 		}
 		
diff --git a/src/AddIns/BackendBindings/VBNetBinding/Test/MockTextEditor.cs b/src/AddIns/BackendBindings/VBNetBinding/Test/MockTextEditor.cs
index 72ebc330fb..616eebbb0d 100644
--- a/src/AddIns/BackendBindings/VBNetBinding/Test/MockTextEditor.cs
+++ b/src/AddIns/BackendBindings/VBNetBinding/Test/MockTextEditor.cs
@@ -49,7 +49,7 @@ namespace ICSharpCode.VBNetBinding.Tests
 				}
 			}
 			
-			this.TextEditor.TextArea.TextView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(this.TextEditor));
+//			this.TextEditor.TextArea.TextView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(this.TextEditor));
 			this.TextEditor.SyntaxHighlighting = HighlightingManager.Instance.GetDefinition("VBNet");
 			
 			new VBNetLanguageBinding().Attach(this);
diff --git a/src/AddIns/BackendBindings/XamlBinding/XamlBinding.Tests/MockTextEditor.cs b/src/AddIns/BackendBindings/XamlBinding/XamlBinding.Tests/MockTextEditor.cs
index 2f59a61e1f..d583271b93 100644
--- a/src/AddIns/BackendBindings/XamlBinding/XamlBinding.Tests/MockTextEditor.cs
+++ b/src/AddIns/BackendBindings/XamlBinding/XamlBinding.Tests/MockTextEditor.cs
@@ -51,7 +51,7 @@ namespace ICSharpCode.XamlBinding.Tests
 				}
 			}
 			
-			this.TextEditor.TextArea.TextView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(this.TextEditor));
+//			this.TextEditor.TextArea.TextView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(this.TextEditor));
 			this.TextEditor.SyntaxHighlighting = HighlightingManager.Instance.GetDefinition("XML");
 			
 			new XamlLanguageBinding().Attach(this);
diff --git a/src/AddIns/Misc/SharpRefactoring/Test/MockTextEditor.cs b/src/AddIns/Misc/SharpRefactoring/Test/MockTextEditor.cs
index a58ddf5414..d730583c68 100644
--- a/src/AddIns/Misc/SharpRefactoring/Test/MockTextEditor.cs
+++ b/src/AddIns/Misc/SharpRefactoring/Test/MockTextEditor.cs
@@ -32,7 +32,7 @@ namespace SharpRefactoring.Tests
 			pc = new DefaultProjectContent();
 			pc.ReferencedContents.Add(AssemblyParserService.DefaultProjectContentRegistry.Mscorlib);
 			
-			this.TextEditor.TextArea.TextView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(this.TextEditor));
+//			this.TextEditor.TextArea.TextView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(this.TextEditor));
 			this.TextEditor.SyntaxHighlighting = HighlightingManager.Instance.GetDefinition("C#");
 		}