Index: trunk/MagicSoft/Mars/mimage/MImgCleanStd.cc
===================================================================
--- trunk/MagicSoft/Mars/mimage/MImgCleanStd.cc	(revision 2004)
+++ trunk/MagicSoft/Mars/mimage/MImgCleanStd.cc	(revision 2014)
@@ -122,5 +122,5 @@
 
         // COBB: '<=' to skip entry=noise=0
-        if (entry <= fCleanLvl1 * noise / ratio)
+        if (entry*ratio <= fCleanLvl1*noise)
             pix.SetPixelUnused();
 
@@ -276,5 +276,5 @@
         const Double_t ratio = TMath::Sqrt(fCam->GetPixRatio(id));
 
-        if (entry <= fCleanLvl2 * noise / ratio)
+        if (entry*ratio <= fCleanLvl2*noise)
             continue;