Index: trunk/FACT++/src/DataCalib.cc
===================================================================
--- trunk/FACT++/src/DataCalib.cc	(revision 12351)
+++ trunk/FACT++/src/DataCalib.cc	(revision 12352)
@@ -64,8 +64,4 @@
 
     fProcessing = true;
-
-    ostringstream name;
-    name << "drs-calib-" << fData.fStep;
-    fFileName = name.str();
 
     Reset();
@@ -134,7 +130,7 @@
     file.AddColumn('F', "TriggerOffsetRms",  1024*1440, "mV");
 
-    fFileName = FormFileName("drs.fits");
-
-    if (!file.OpenFile(fFileName))
+    const string filename = FormFileName("drs.fits");
+
+    if (!file.OpenFile(filename))
         return;
 
@@ -180,5 +176,5 @@
 
     ostringstream str;
-    str << "Wrote DRS calibration data (step=" << fData.fStep << ") to '" << fFileName << "'";
+    str << "Wrote DRS calibration data (step=" << fData.fStep << ") to '" << filename << "'";
     Info(str.str());
 #endif