Index: trunk/FACT++/gui/RawEventsViewer/RawEventsViewer.cc
===================================================================
--- trunk/FACT++/gui/RawEventsViewer/RawEventsViewer.cc	(revision 19988)
+++ trunk/FACT++/gui/RawEventsViewer/RawEventsViewer.cc	(revision 19989)
@@ -573,5 +573,5 @@
         inputFile = reopen && fIsDrsCalibration ? new zfits(file, "Events") :  new factfits(file, "Events");
     }
-    catch (std::runtime_error e)
+    catch (const std::runtime_error &e)
     {
         cout << "Something went wrong while loading fits. Aborting: " << e.what() << endl;
@@ -611,5 +611,5 @@
             }
         }
-        catch (std::runtime_error e)
+        catch (const std::runtime_error &e)
         {
             cout << e.what() << endl;