--- PamCut/CollectionActions/Histo1DActions/Histo1DAction/Histo1DAction.h	2009/10/29 17:49:07	1.3
+++ PamCut/CollectionActions/Histo1DActions/Histo1DAction/Histo1DAction.h	2010/03/11 19:14:03	1.5
@@ -134,16 +134,15 @@
   /*! @brief The ROOT histogram. */
   TH1 *_rootHisto;
 
-private:
-
-  unsigned int _underflow, _overflow;
-
   TString _outFileBase;
   TString _mode;
   TString _title, _xLabel;
+
+private:
+
+  HistoType _underflow, _overflow;
   bool _outRoot;
   bool _outText;
-
   void _CreateHisto();
   void _InitHistos();
 };
@@ -168,6 +167,8 @@
 void Histo1DAction<HistoType>::_InitHistos() {
 
   _CreateHisto();
+  if (_bins.size() < 2) // SetXAxis not called by the main program, or wrongly filled (only 1 bin limit)
+    SetXAxis("Default X", 10, 0., 1.);
 
   if (_rootHisto) {
     Double_t *auxArray = new Double_t[_bins.size()];
@@ -202,7 +203,7 @@
 Histo1DAction<HistoType>::Histo1DAction(const char *actionName, TString title, TString outFileBase, TString mode,
     bool outRoot, bool outText) :
   CollectionAction(actionName), _bins(0), _histo(0), _rootHisto(NULL), _outFileBase(outFileBase), _mode(mode), _title(
-      title), _xLabel(""), _outRoot(outRoot), _outText(outText) {
+      title), _xLabel(""), _underflow(0), _overflow(0), _outRoot(outRoot), _outText(outText) {
 
 }