If you have more than one version of Matlab installed, and you want the newer one to run I would change the symbolic link instead.
Open a terminal window and go to
remove the old symbolic link with
sudo rm matlab
Create a new symbolic link to your newer version of Matlab. In my system it is located in /usr/local/R2016a (on yours it is /usr/local/MATLAB/R2013b) .
sudo ln -s /usr/local/R2016a/bin/matlab matlab
Now when you run matlab from the terminal, it should open the newer version.