Index: /trunk/FACT++/src/fadctrl.cc
===================================================================
--- /trunk/FACT++/src/fadctrl.cc	(revision 12376)
+++ /trunk/FACT++/src/fadctrl.cc	(revision 12377)
@@ -768,5 +768,5 @@
         {
             ostringstream msg;
-            msg << "Given run number smaller than next run number which will be opened by the event builder (" << GetRunNumber() << ")";
+            msg << "Given run number (" << num << ") smaller than next run number (" << GetRunNumber() << ") which will be opened by the event builder";
             T::Error(msg);
             return false;
@@ -1636,5 +1636,5 @@
             (bind(&StateMachineFAD::SetRoi, this, placeholders::_1))
             ("Set region-of-interest to value"
-            "|addr[short]:Address of register"
+            "|channel[short]:Channel on each chip for which the ROI is set (0-8), -1 for all"
             "|val[short]:Value to be set");