diff --git a/src/SourceBuild/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/LicenseExclusions.txt b/src/SourceBuild/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/LicenseExclusions.txt
index 574e9754e..6ec6e8b98 100644
--- a/src/SourceBuild/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/LicenseExclusions.txt
+++ b/src/SourceBuild/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/LicenseExclusions.txt
@@ -284,5 +284,10 @@ src/wpf/src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Media/FontE
 src/wpf/eng/WpfArcadeSdk/tools/AvTrace/GenTraceSources.pl|proprietary-license
 src/wpf/eng/WpfArcadeSdk/tools/GenXmlStringTable.pl|proprietary-license
 
-# False positive
+# False positive - https://github.com/dotnet/source-build/issues/4373
 src/wpf/src/Microsoft.DotNet.Wpf/src/PresentationUI/MS/Internal/Documents/RMPublishingDialog.RightsTable.cs|unknown-license-reference
+src/wpf/src/Microsoft.DotNet.Wpf/src/PresentationFramework/System/Windows/WindowBackdropType.cs|bsd-2-clause-views
+src/wpf/src/Microsoft.DotNet.Wpf/src/Themes/PresentationFramework.Fluent/Resources/*.xaml|bsd-2-clause-views
+src/wpf/src/Microsoft.DotNet.Wpf/src/Themes/PresentationFramework.Fluent/Resources/Theme/*.xaml|bsd-2-clause-views
+src/wpf/src/Microsoft.DotNet.Wpf/src/Themes/PresentationFramework.Fluent/Styles/*.xaml|bsd-2-clause-views
+src/wpf/src/Microsoft.DotNet.Wpf/src/Themes/PresentationFramework.Fluent/Styles/*.xaml|mpl-2.0
\ No newline at end of file