diff --git a/stream.go b/stream.go
index cc59401..4a8e5ac 100755
--- a/stream.go
+++ b/stream.go
@@ -52,8 +52,8 @@ func (s Stream) Update() {
 	go gocv.IMWrite(s.GetCurrentColorInstantPath(), mat)
 
 	grey := gocv.NewMat()
-	gocv.CvtColor(mat, &grey, gocv.ColorBGRAToBGR)
-	gocv.GaussianBlur(mat, &mat, image.Point{X: 21, Y: 21}, 0, 0, gocv.BorderReflect)
+	gocv.CvtColor(mat, &grey, gocv.ColorBGRAToGray)
+	gocv.GaussianBlur(grey, &grey, image.Point{X: 21, Y: 21}, 0, 0, gocv.BorderReflect)
 	go s.SaveStreamInstant(grey)
 }