diff --git a/rtengine/simpleprocess.cc b/rtengine/simpleprocess.cc
index 3b450c492..774ee6c5c 100644
--- a/rtengine/simpleprocess.cc
+++ b/rtengine/simpleprocess.cc
@@ -1382,6 +1382,7 @@ private:
                 int(float(params.wavelet.strength) * tmpScale);
             params.dirpyrDenoise.luma *= tmpScale;
             params.dirpyrDenoise.smethod = "shal";
+            params.dirpyrDenoise.median = false;
 
             const double dirpyreq_scale = min(tmpScale * 1.5, 1.0);
             for (int i = 0; i < 6; ++i) {