diff --git a/pkg/resizefs/resizefs_windows.go b/pkg/resizefs/resizefs_windows.go
index 3de45006a..ff490d72f 100644
--- a/pkg/resizefs/resizefs_windows.go
+++ b/pkg/resizefs/resizefs_windows.go
@@ -46,20 +46,17 @@ func NewResizeFs(mounter *mount.SafeFormatAndMount) *resizeFs {
 func (resizefs *resizeFs) Resize(devicePath string, deviceMountPath string) (bool, error) {
 	switch resizefs.mounter.Interface.(type) {
 	case *mounter.CSIProxyMounterV1:
-		return resizefs.ResizeV1(devicePath, deviceMountPath)
+		return resizefs.resizeV1(devicePath, deviceMountPath)
 	case *mounter.CSIProxyMounterV1Beta:
-		return resizefs.ResizeV1Beta(devicePath, deviceMountPath)
+		return resizefs.resizeV1Beta(devicePath, deviceMountPath)
 	}
 	return false, fmt.Errorf("resize.mounter.Interface is not valid")
 }
 
-func (resizefs *resizeFs) ResizeV1(devicePath string, deviceMountPath string) (bool, error) {
+func (resizefs *resizeFs) resizeV1(devicePath string, deviceMountPath string) (bool, error) {
 	klog.V(3).Infof("resizeFS.Resize - Expanding mounted volume %s", deviceMountPath)
 
-	proxy, ok := resizefs.mounter.Interface.(*mounter.CSIProxyMounterV1)
-	if !ok {
-		return false, fmt.Errorf("could not cast to csi proxy class")
-	}
+	proxy := resizefs.mounter.Interface.(*mounter.CSIProxyMounterV1)
 
 	idRequest := &volumeapiv1.VolumeIDFromMountRequest{
 		Mount: deviceMountPath,
@@ -81,13 +78,10 @@ func (resizefs *resizeFs) ResizeV1(devicePath string, deviceMountPath string) (b
 }
 
 // resize perform resize of file system
-func (resizefs *resizeFs) ResizeV1Beta(devicePath string, deviceMountPath string) (bool, error) {
+func (resizefs *resizeFs) resizeV1Beta(devicePath string, deviceMountPath string) (bool, error) {
 	klog.V(3).Infof("resizeFS.Resize - Expanding mounted volume %s", deviceMountPath)
 
-	proxy, ok := resizefs.mounter.Interface.(*mounter.CSIProxyMounterV1Beta)
-	if !ok {
-		return false, fmt.Errorf("could not cast to csi proxy class")
-	}
+	proxy := resizefs.mounter.Interface.(*mounter.CSIProxyMounterV1Beta)
 
 	idRequest := &volumeapiv1beta1.VolumeIDFromMountRequest{
 		Mount: deviceMountPath,