diff --git a/src/libraries/System.Net.Security/tests/FunctionalTests/SslStreamMutualAuthenticationTest.cs b/src/libraries/System.Net.Security/tests/FunctionalTests/SslStreamMutualAuthenticationTest.cs
index adf161fabd49f1..20301a08b647f1 100644
--- a/src/libraries/System.Net.Security/tests/FunctionalTests/SslStreamMutualAuthenticationTest.cs
+++ b/src/libraries/System.Net.Security/tests/FunctionalTests/SslStreamMutualAuthenticationTest.cs
@@ -38,7 +38,7 @@ public async Task SslStream_RequireClientCert_IsMutuallyAuthenticated_ReturnsTru
                 {
                     ClientCertificates = useClientSelectionCallback ? null : new X509CertificateCollection() { _clientCertificate },
                     LocalCertificateSelectionCallback = useClientSelectionCallback ? ClientCertSelectionCallback : null,
-                    TargetHost = _clientCertificate.GetNameInfo(X509NameType.SimpleName, false)
+                    TargetHost = Guid.NewGuid().ToString("N")
                 });
                 Task t1 = server.AuthenticateAsServerAsync(new SslServerAuthenticationOptions
                 {