diff --git a/rackspace/cdn/v1/services/delegate_test.go b/rackspace/cdn/v1/services/delegate_test.go
index 6c48365..b9abd7d 100644
--- a/rackspace/cdn/v1/services/delegate_test.go
+++ b/rackspace/cdn/v1/services/delegate_test.go
@@ -348,6 +348,36 @@
 	th.AssertEquals(t, expected, actual)
 }
 
+func TestUnsuccessfulUpdate(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	os.HandleUpdateCDNServiceSuccessfully(t)
+
+	updateOpts := os.UpdateOpts{
+		os.UpdateOpt{
+			Op:   "Foo",
+			Path: "/origins/0",
+			Value: map[string]interface{}{
+				"origin": "44.33.22.11",
+				"port":   80,
+				"ssl":    false,
+			},
+		},
+		os.UpdateOpt{
+			Op:   os.Add,
+			Path: "/domains/0",
+			Value: map[string]interface{}{
+				"domain": "added.mocksite4.com",
+			},
+		},
+	}
+	_, err := Update(fake.ServiceClient(), "96737ae3-cfc1-4c72-be88-5d0e7cc9a3f0", updateOpts).Extract()
+	if err == nil {
+		t.Errorf("Expected error during TestUnsuccessfulUpdate but didn't get one.")
+	}
+}
+
 func TestDelete(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()