Index: trunk/BNC/combination/bnccomb.cpp
===================================================================
--- trunk/BNC/combination/bnccomb.cpp	(revision 3424)
+++ trunk/BNC/combination/bnccomb.cpp	(revision 3425)
@@ -538,5 +538,5 @@
             QQ_sav.Row(iPar)    = 0.0;
             QQ_sav.Column(iPar) = 0.0;
-            QQ_sav(iPar,iPar)   = pp->sig_0;
+            QQ_sav(iPar,iPar)   = pp->sig_0 * pp->sig_0;
           }
         }