Index: /trunk/FACT++/src/feedback.cc
===================================================================
--- /trunk/FACT++/src/feedback.cc	(revision 13240)
+++ /trunk/FACT++/src/feedback.cc	(revision 13241)
@@ -256,5 +256,5 @@
 
         ostringstream msg;
-        msg << setprecision(4) << "Sending new absolute offset (" << diff << "V+" << (avg[0]+avg[1])/(num[0]+num[1]) << "V) to biasctrl.";
+        msg << setprecision(4) << "Sending new absolute offset (" << diff << "V+" << (num[0]+num[1]>0?(avg[0]+avg[1])/(num[0]+num[1]):0) << "V) to biasctrl.";
         Info(msg);