diff --git a/test/Microsoft.IdentityModel.Protocols.OpenIdConnect.Tests/OpenIdConfigData.cs b/test/Microsoft.IdentityModel.Protocols.OpenIdConnect.Tests/OpenIdConfigData.cs
index 34fb285d30..db03d7da04 100644
--- a/test/Microsoft.IdentityModel.Protocols.OpenIdConnect.Tests/OpenIdConfigData.cs
+++ b/test/Microsoft.IdentityModel.Protocols.OpenIdConnect.Tests/OpenIdConfigData.cs
@@ -141,6 +141,17 @@ public static OpenIdConnectConfiguration FullyPopulatedWithKeys
                                                 ""SigningKeys"":[""key1"",""key2""]
                                             }";
 
+        public static string JsonWithExtraObject = 
+                                            @"{ ""issuer"": ""https://server.example.com"",
+                                                ""authorization_endpoint"": ""https://server.example.com/authz"",
+                                                ""mtls_endpoint_aliases"":
+                                                {   ""token_endpoint"": ""https://mtls.example.com/token"",
+                                                    ""revocation_endpoint"": ""https://mtls.example.com/revo"",
+                                                    ""introspection_endpoint"": ""https://mtls.example.com/introspect""
+                                                },
+                                                ""jwks_uri"": ""https://server.example.com/jwks""
+                                            }";
+
         public static string OpenIdConnectMetadataBadX509DataString = @"{""jwks_uri"":""JsonWebKeySetBadX509Data.json""}";
         public static string OpenIdConnectMetadataBadBase64DataString = @"{""jwks_uri"":""JsonWebKeySetBadBase64Data.json""}";
         public static string OpenIdConnectMetadataBadUriKeysString = @"{""jwks_uri"":""___NoSuchFile___""}";
diff --git a/test/Microsoft.IdentityModel.Protocols.OpenIdConnect.Tests/OpenIdConnectConfigurationTests.cs b/test/Microsoft.IdentityModel.Protocols.OpenIdConnect.Tests/OpenIdConnectConfigurationTests.cs
index fc6690b7ce..75b4a9f6fb 100644
--- a/test/Microsoft.IdentityModel.Protocols.OpenIdConnect.Tests/OpenIdConnectConfigurationTests.cs
+++ b/test/Microsoft.IdentityModel.Protocols.OpenIdConnect.Tests/OpenIdConnectConfigurationTests.cs
@@ -301,5 +301,16 @@ public void NonemptyCollectionSerialization()
             }
             TestUtilities.AssertFailIfErrors(context);
         }
+        
+        [Fact]
+        public void ReadWithExtraObject()
+        {
+
+            OpenIdConnectConfiguration openIdConnectConfiguration = OpenIdConnectConfiguration.Create(OpenIdConfigData.JsonWithExtraObject);
+
+            Assert.Equal("https://server.example.com", openIdConnectConfiguration.Issuer);
+            Assert.Equal("https://server.example.com/authz", openIdConnectConfiguration.AuthorizationEndpoint);
+            Assert.Equal("https://server.example.com/jwks", openIdConnectConfiguration.JwksUri);
+        }
     }
 }