diff --git a/filter/filters_circleci.go b/filter/filters_circleci.go
index bb49d712..2e119fe5 100644
--- a/filter/filters_circleci.go
+++ b/filter/filters_circleci.go
@@ -32,12 +32,12 @@ import (
 )
 
 // NewMOG returns a pointer to a new NoOp struct for testing purposes only.
-func NewMOG(dst io.WriteCloser, area, threshold float64, history int, debug bool, hf int, downscalingFactor int) *NoOp {
+func NewMOG(dst io.WriteCloser, area, threshold float64, history int, debug bool, hf int, scaleFactor int) *NoOp {
 	return &NoOp{dst: dst}
 }
 
 // NewKNN returns a pointer to a new NoOp struct for testing purposes only.
-func NewKNN(dst io.WriteCloser, area, threshold float64, history, kernelSize int, debug bool, hf int, downscalingFactor int) *NoOp {
+func NewKNN(dst io.WriteCloser, area, threshold float64, history, kernelSize int, debug bool, hf int, scaleFactor int) *NoOp {
 	return &NoOp{dst: dst}
 }
 
diff --git a/filter/knn.go b/filter/knn.go
index 0009ce7d..fdb01937 100644
--- a/filter/knn.go
+++ b/filter/knn.go
@@ -53,14 +53,14 @@ type KNN struct {
 }
 
 // NewKNN returns a pointer to a new KNN filter struct.
-func NewKNN(dst io.WriteCloser, area, threshold float64, history, kernelSize int, debug bool, hf int, downscalingFactor int) *KNN {
+func NewKNN(dst io.WriteCloser, area, threshold float64, history, kernelSize int, debug bool, hf int, scaleFactor int) *KNN {
 	bs := gocv.NewBackgroundSubtractorKNNWithParams(history, threshold, false)
 	k := gocv.GetStructuringElement(gocv.MorphRect, image.Pt(kernelSize, kernelSize))
 	var windows []*gocv.Window
 	if debug {
 		windows = []*gocv.Window{gocv.NewWindow("KNN: Bounding boxes"), gocv.NewWindow("KNN: Motion")}
 	}
-	return &KNN{dst, area, &bs, k, debug, windows, make([][]byte, hf-1), hf, 0, 1 / float64(downscalingFactor)}
+	return &KNN{dst, area, &bs, k, debug, windows, make([][]byte, hf-1), hf, 0, 1 / float64(scaleFactor)}
 }
 
 // Implements io.Closer.
diff --git a/filter/mog.go b/filter/mog.go
index d951823a..7971452c 100644
--- a/filter/mog.go
+++ b/filter/mog.go
@@ -53,14 +53,14 @@ type MOG struct {
 }
 
 // NewMOG returns a pointer to a new MOG filter struct.
-func NewMOG(dst io.WriteCloser, area, threshold float64, history int, debug bool, hf int, downscalingFactor int) *MOG {
+func NewMOG(dst io.WriteCloser, area, threshold float64, history int, debug bool, hf int, scaleFactor int) *MOG {
 	bs := gocv.NewBackgroundSubtractorMOG2WithParams(history, threshold, false)
 	k := gocv.GetStructuringElement(gocv.MorphRect, image.Pt(3, 3))
 	var windows []*gocv.Window
 	if debug {
 		windows = []*gocv.Window{gocv.NewWindow("MOG: Bounding boxes"), gocv.NewWindow("MOG: Motion")}
 	}
-	return &MOG{dst, area, &bs, k, debug, windows, make([][]byte, hf-1), hf, 0, 1 / float64(downscalingFactor)}
+	return &MOG{dst, area, &bs, k, debug, windows, make([][]byte, hf-1), hf, 0, 1 / float64(scaleFactor)}
 }
 
 // Implements io.Closer.