Index: trunk/MagicSoft/Mars/mhist/MHMatrix.cc
===================================================================
--- trunk/MagicSoft/Mars/mhist/MHMatrix.cc	(revision 1852)
+++ trunk/MagicSoft/Mars/mhist/MHMatrix.cc	(revision 1853)
@@ -617,13 +617,11 @@
     tlist.AddToList(read);
 
-
     if (filter)
-      {
-	tlist.AddToList(filter);
-	fillh.SetFilter(filter);
-      }
+    {
+        tlist.AddToList(filter);
+        fillh.SetFilter(filter);
+    }
 
     tlist.AddToList(&fillh);
-
 
     MEvtLoop evtloop;
Index: trunk/MagicSoft/Mars/mhist/MHMatrix.h
===================================================================
--- trunk/MagicSoft/Mars/mhist/MHMatrix.h	(revision 1852)
+++ trunk/MagicSoft/Mars/mhist/MHMatrix.h	(revision 1853)
@@ -93,5 +93,5 @@
     Double_t operator[](Int_t col) { return fM(fRow, col); }
 
-    Bool_t Fill(MParList *plist, MTask *read, MF *filter=0);
+    Bool_t Fill(MParList *plist, MTask *read, MF *filter=NULL);
 
     TString GetDataMember() const;