MATLAB: Error fsolve

I write a file that computes F, the values of the equations at x.

function F = myfun(x)
F = [2*x(1) - x(2) - exp(-x(1));
      -x(1) + 2*x(2) - exp(-x(2))];

Save this function file as myfun.m somewhere on your MATLAB path. Next, set up the initial point and options and call fsolve:

x0 = [-5; -5];          
options=optimset('Display','iter');   
[x,fval] = fsolve(@myfun,x0,options)

Then I get a mistake

??? Attempt to execute SCRIPT fsolve as a function:
\fsolve.m
Error in ==> fsolve at 3
[x,fval] = fsolve(@myfun,x0,options)

What is wrong?

Thanks in advance.