diff --git a/PackageIndexer/PackageFilter.cs b/PackageIndexer/PackageFilter.cs
index 8dd00980..1ecf0eb7 100644
--- a/PackageIndexer/PackageFilter.cs
+++ b/PackageIndexer/PackageFilter.cs
@@ -83,6 +83,7 @@ public bool IsMatch(string packageId)
         ],
         excludes:
         [
+            PackageFilterExpression.Parse("System.Private.ServiceModel"),
             PackageFilterExpression.Parse("System.Runtime.WindowsRuntime"),
             PackageFilterExpression.Parse("System.Runtime.WindowsRuntime.UI.Xaml"),
             // Documented under Azure SDK for .NET moniker.