diff --git a/examples/pvl_facedetect.go b/examples/pvl_facedetect.go
index 24c652a5..fb6aeec0 100644
--- a/examples/pvl_facedetect.go
+++ b/examples/pvl_facedetect.go
@@ -44,6 +44,8 @@ func main() {
 	defer img.Delete()
 
 	fd := pvl.NewFaceDetector()
+	defer fd.Close()
+
 	fd.SetTrackingModeEnabled(true)
 
 	fmt.Printf("start reading camera device: %v\n", deviceID)
diff --git a/pvl/pvl.cpp b/pvl/pvl.cpp
index 0a54e813..9b37a650 100644
--- a/pvl/pvl.cpp
+++ b/pvl/pvl.cpp
@@ -6,7 +6,7 @@ Face Face_New()
     return new cv::pvl::Face();
 }
 
-void Face_Delete(Face face)
+void Face_Close(Face face)
 {
     delete face;
 }
@@ -32,17 +32,13 @@ Rect Face_GetRect(Face face)
     return r;
 }
 
-void Faces_Delete(struct Faces fs) {
-    delete fs.faces;
-}
-
 // FaceDetector
 FaceDetector FaceDetector_New() 
 {
     return cv::pvl::FaceDetector::create();
 }
 
-void FaceDetector_Delete(FaceDetector f) 
+void FaceDetector_Close(FaceDetector f) 
 {
     delete f;
 }
diff --git a/pvl/pvl.go b/pvl/pvl.go
index 8beda47c..7458029f 100644
--- a/pvl/pvl.go
+++ b/pvl/pvl.go
@@ -23,9 +23,9 @@ func NewFace() Face {
 	return Face{p: C.Face_New()}
 }
 
-// Delete Face.
-func (f *Face) Delete() {
-	C.Face_Delete(f.p)
+// Close Face.
+func (f *Face) Close() {
+	C.Face_Close(f.p)
 	f.p = nil
 }
 
@@ -48,9 +48,9 @@ func NewFaceDetector() FaceDetector {
 	return FaceDetector{p: C.FaceDetector_New()}
 }
 
-// Delete object.
-func (f *FaceDetector) Delete() {
-	C.FaceDetector_Delete(f.p)
+// Close FaceDetector.
+func (f *FaceDetector) Close() {
+	C.FaceDetector_Close(f.p)
 	f.p = nil
 }
 
diff --git a/pvl/pvl.h b/pvl/pvl.h
index 86d4be75..a69b70ce 100644
--- a/pvl/pvl.h
+++ b/pvl/pvl.h
@@ -27,17 +27,13 @@ typedef struct Faces {
 
 // Face
 Face Face_New();
-void Face_Delete(Face f);
+void Face_Close(Face f);
 void Face_CopyTo(Face src, Face dst);
 Rect Face_GetRect(Face f);
 
-// Faces
-struct Faces Faces_New();
-void Faces_Delete(struct Faces fs);
-
 // FaceDetector
 FaceDetector FaceDetector_New();
-void FaceDetector_Delete(FaceDetector f);
+void FaceDetector_Close(FaceDetector f);
 void FaceDetector_SetTrackingModeEnabled(FaceDetector f, bool enabled);
 struct Faces FaceDetector_DetectFaceRect(FaceDetector f, Mat img);