void AliMUONTriggerEfficiencyCells::ReadFile(const Char_t* filename, const Char_t* listname)
{
/// Structure of file (.root) containing local board efficency
- TFile *file = new TFile(filename, "read");
+ TFile *file = TFile::Open(filename);
if(!file || !file->IsOpen()) {
AliError(Form("Can't read file %s",filename));
return;