diff --git a/src/AddIns/DisplayBindings/XmlEditor/Test/Tree/AddNewNodeDialogTestFixture.cs b/src/AddIns/DisplayBindings/XmlEditor/Test/Tree/AddNewNodeDialogTestFixture.cs
index 1505c9d7a7..eb457219a6 100644
--- a/src/AddIns/DisplayBindings/XmlEditor/Test/Tree/AddNewNodeDialogTestFixture.cs
+++ b/src/AddIns/DisplayBindings/XmlEditor/Test/Tree/AddNewNodeDialogTestFixture.cs
@@ -288,12 +288,12 @@ namespace XmlEditor.Tests.Tree
 		public void RightToLeftConversion()
 		{
 			try {
-				PropertyService.Set("CoreProperties.UILanguage", RightToLeftConverter.RightToLeftLanguages[0]);
+				RightToLeftConverter.IsRightToLeft = true;
 				using (AddXmlNodeDialog dialog = new AddXmlNodeDialog()) {
 					Assert.AreEqual(RightToLeft.Yes, dialog.RightToLeft);
 				}
 			} finally {
-				PropertyService.Set("CoreProperties.UILanguage", Thread.CurrentThread.CurrentUICulture.Name);
+				RightToLeftConverter.IsRightToLeft = false;
 			}
 		}