diff --git a/src/VisualStudio/Core/Test/Diagnostics/MiscDiagnosticUpdateSourceTests.vb b/src/VisualStudio/Core/Test/Diagnostics/MiscDiagnosticUpdateSourceTests.vb
index 8646314e7e60c9ce2cf0b89e21015f1ef3a3c753..68f7e2b4c62b15416ec1c700cc89d25a8f4d0dc0 100644
--- a/src/VisualStudio/Core/Test/Diagnostics/MiscDiagnosticUpdateSourceTests.vb
+++ b/src/VisualStudio/Core/Test/Diagnostics/MiscDiagnosticUpdateSourceTests.vb
@@ -43,6 +43,7 @@ class 123 { }
 
                 Dim buffer = workspace.Documents.First().GetTextBuffer()
 
+                WpfTestCase.RequireWpfFact("This test uses IForegroundNotificationService")
                 Dim foregroundService = workspace.GetService(Of IForegroundNotificationService)()
                 Dim provider = New DiagnosticsSquiggleTaggerProvider(optionsService, diagnosticService, foregroundService, listeners)
                 Dim tagger = provider.CreateTagger(Of IErrorTag)(buffer)