@ -56,7 +56,7 @@ spawn(Arg *arg)
if(dpy)
close(ConnectionNumber(dpy));
setsid();
execl(shell, shell, "-c", arg->cmd, NULL);
execl(shell, shell, "-c", arg->cmd, (char *)NULL);
fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
perror(" failed");
}