Using mutex C# for Inno setup -

avast detect software uses c# mutex virus.

i need use not able to, code:

private static mutex meuprograma;  [stathread] static void main() {      application.enablevisualstyles();      application.setcompatibletextrenderingdefault(false);      bool creatednew;      using (var setupmutex = new mutex(false, @"alpino"))      {           application.run(new form1());      } } 

avast detects virus.

can me?