diff --git a/rackspace/objectstorage/v1/objects/delegate_test.go b/rackspace/objectstorage/v1/objects/delegate_test.go
index 808f940..08831ec 100644
--- a/rackspace/objectstorage/v1/objects/delegate_test.go
+++ b/rackspace/objectstorage/v1/objects/delegate_test.go
@@ -70,8 +70,8 @@
 
 	content := bytes.NewBufferString("Did gyre and gimble in the wabe")
 	options := &os.CreateOpts{ContentType: "application/json"}
-	_, err := Create(fake.ServiceClient(), "testContainer", "testObject", content, options).ExtractHeaders()
-	th.AssertNoErr(t, err)
+	res := Create(fake.ServiceClient(), "testContainer", "testObject", content, options)
+	th.AssertNoErr(t, res.Err)
 }
 
 func TestCopyObject(t *testing.T) {
@@ -80,8 +80,8 @@
 	os.HandleCopyObjectSuccessfully(t)
 
 	options := &CopyOpts{Destination: "/newTestContainer/newTestObject"}
-	_, err := Copy(fake.ServiceClient(), "testContainer", "testObject", options).ExtractHeaders()
-	th.AssertNoErr(t, err)
+	res := Copy(fake.ServiceClient(), "testContainer", "testObject", options)
+	th.AssertNoErr(t, res.Err)
 }
 
 func TestDeleteObject(t *testing.T) {
@@ -89,8 +89,8 @@
 	defer th.TeardownHTTP()
 	os.HandleDeleteObjectSuccessfully(t)
 
-	_, err := Delete(fake.ServiceClient(), "testContainer", "testObject", nil).ExtractHeaders()
-	th.AssertNoErr(t, err)
+	res := Delete(fake.ServiceClient(), "testContainer", "testObject", nil)
+	th.AssertNoErr(t, res.Err)
 }
 
 func TestUpdateObject(t *testing.T) {
@@ -99,8 +99,8 @@
 	os.HandleUpdateObjectSuccessfully(t)
 
 	options := &os.UpdateOpts{Metadata: map[string]string{"Gophercloud-Test": "objects"}}
-	_, err := Update(fake.ServiceClient(), "testContainer", "testObject", options).ExtractHeaders()
-	th.AssertNoErr(t, err)
+	res := Update(fake.ServiceClient(), "testContainer", "testObject", options)
+	th.AssertNoErr(t, res.Err)
 }
 
 func TestGetObject(t *testing.T) {