diff --git a/cmd/ovirt-flexdriver/ovirt-flexdriver.go b/cmd/ovirt-flexdriver/ovirt-flexdriver.go
index cc39ccb7..78b157ad 100644
--- a/cmd/ovirt-flexdriver/ovirt-flexdriver.go
+++ b/cmd/ovirt-flexdriver/ovirt-flexdriver.go
@@ -209,7 +209,7 @@ func Attach(jsonOpts string, nodeName string) (internal.Response, error) {
 		_, noAttachment := err.(internal.NotFound)
 		if noAttachment {
 			attachment, err =
-				ovirt.CreateDisk(fromk8sNameToOvirt(r.VolumeName), r.StorageDomain, r.Size, r.Mode == "ro", vm.Id, diskResult.Disks[0].Id, "virtio_scsi")
+				ovirt.CreateDisk(fromk8sNameToOvirt(r.VolumeName), r.StorageDomain, r.Mode == "ro", vm.Id, diskResult.Disks[0].Id, "virtio_scsi")
 			if err != nil {
 				return internal.FailedResponseFromError(err), err
 			}
diff --git a/internal/ovirt-mini-api.go b/internal/ovirt-mini-api.go
index 90213348..9760207a 100644
--- a/internal/ovirt-mini-api.go
+++ b/internal/ovirt-mini-api.go
@@ -17,7 +17,6 @@ limitations under the License.
 package internal
 
 import (
-	"code.cloudfoundry.org/bytefmt"
 	"crypto/tls"
 	"crypto/x509"
 	"encoding/json"
@@ -177,7 +176,7 @@ func (ovirt Ovirt) GetDiskByName(diskName string) (DiskResult, error) {
 	return diskResult, err
 }
 
-func (ovirt *Ovirt) CreateUnattachedDisk(diskName string, storageDomainName string, sizeIbBytes int, readOnly bool, format string) (Disk, error) {
+func (ovirt *Ovirt) CreateUnattachedDisk(diskName string, storageDomainName string, sizeIbBytes int64, readOnly bool, format string) (Disk, error) {
 	disk := Disk{
 		Name:            diskName,
 		ProvisionedSize: uint64(sizeIbBytes),
@@ -197,22 +196,16 @@ func (ovirt *Ovirt) CreateUnattachedDisk(diskName string, storageDomainName stri
 func (ovirt *Ovirt) CreateDisk(
 	diskName string,
 	storageDomainName string,
-	size string,
 	readOnly bool,
 	vmId string,
 	diskId string,
 	diskInterface string) (DiskAttachment, error) {
 
-	s, err := bytefmt.ToBytes(size)
-	if err != nil {
-		return DiskAttachment{}, err
-	}
 	a := DiskAttachment{
 		Active: true,
 		Disk: Disk{
-			Name:            diskName,
-			ProvisionedSize: s,
-			Format:          "raw",
+			Name:   diskName,
+			Format: "raw",
 			StorageDomains: StorageDomains{
 				[]StorageDomain{{Name: storageDomainName}},
 			},