diff --git a/revid/revid.go b/revid/revid.go
index 31d474e7..7fdb3cae 100644
--- a/revid/revid.go
+++ b/revid/revid.go
@@ -348,7 +348,6 @@ func (r *Revid) setupPipeline(mtsEnc func(dst io.WriteCloser, rate float64) (io.
 				r.filters[i] = filter.NewKNNFilter(dst, r.cfg.KNNMinArea, r.cfg.KNNThreshold, int(r.cfg.KNNHistory), int(r.cfg.KNNKernel), r.cfg.ShowWindows, r.cfg.MotionInterval)
 			case config.FilterDifference:
 				r.filters[i] = filter.NewDifference(dst, r.cfg.ShowWindows, r.cfg.DiffThreshold)
-				r.filters[i] = filter.NewKNNFilter(dst, knnMinArea, knnThreshold, knnHistory, knnKernel, r.cfg.ShowWindows)
 			case config.FilterBasic:
 				r.filters[i] = filter.NewBasicFilter(dst, r.cfg.ShowWindows)
 			default: